CN108186088A - Novel puncture needle and puncture device comprising same - Google Patents

The invention provides a novel nondestructive puncture needle, which comprises a connecting part and an acting part, wherein the connecting part is axially connected with the acting part, the acting part comprises an upper part, a middle part and a lower part, and the transverse size of the acting part is gradually increased from top to bottom; the upper part is in a flat duckbill shape; the action part extends from top to bottom through twice reverse torsion around the longitudinal axis of the action part, so that two side peripheral surfaces of the action part form curved surfaces twisted in opposite directions. When in use, muscle tissue cells are poked by the upper part. When muscle tissues are pulled open, the twisted curved surfaces formed by the two side wall surfaces are utilized to prop open muscle cells, and the defect of overlarge friction force of the spiral vertebral body is eliminated. After the operation is finished, the puncture needle can be easily pulled out, and at the moment, the muscle tissue can be closed automatically without bleeding.

A kind of Novel puncture needle and the puncture outfit comprising the puncture needle

Technical field

The invention belongs to medical instruments fields, and in particular to a kind of pricking device and other application methods.

Background technology

When minimally invasive laparoscopic medical performs the operation beginning, elder generation is near patient affected part or navel menisectomy knife does a small notch, Then lift stomach wall, hold after puncture outfit first tilts and be vertically slowly pierced into abdominal cavity, worn wherein being moved down while carrying out back rotation Cross patient abdomen cortex.Wherein puncture needle shape is related with the fascia tissue defect degree caused by puncturing, existing puncture needle tip For taper or class taper, and two sharp blade surfaces are equipped with generally on the acting surface of puncture needle, when at tip, straight cutting enters stomach wall, It is intraperitoneal that sharp sword is rotated back and forth into insertion；Abdominal cavity is caused at this time to damage for the first time, abdominal cavity is broken through in a flash, may pierce Internal is killed, causes internal haemorrhage, it is serious to cause death；Second of damage is caused, is worn in addition, completing to extract in operation During pricker, extraction causes third time to damage, and such reciprocating operation scratches, cut-out abdominal wall muscle cell tissue.

CN201610257975.1 discloses a kind of puncture outfit, and above-mentioned sharp edge is replaced with separated structure, punctures Tip causes intraperitoneal muscle direct damage, and can still scratch muscle during extraction puncture needle. CN201120221263.7 discloses a kind of abdominal cavity puncture outfit, using cell texture, will puncture acting surface and is set using helicon Meter, passivity reduce the damage to stomach wall or wall of the chest muscle along muscle separation musculature in direction out of shape.However it is still deposited In following defect：First, the sharp top of puncture outfit still enters abdominal cavity using direct-insert mode, it is difficult to avoid to stomach wall chamber Indoor damage, secondly, the helicon design that puncture effect uses eliminate the segmental defect of the sharp blade of tradition, however Helical design power is larger, big with the frictional force of muscle, and when extraction carrys out back rotation and scratches muscle cell, as patent document discloses It is described, damage is only reduced, the damage to human body can not be avoided completely.

Invention content

The object of the present invention is to provide a kind of novel lossless to hinder puncture needle, which includes connecting portion and service portion, institute Connecting portion and service portion is stated axially connect, the service portion includes top, middle part and lower part, the lateral dimension of the service portion from Up to lower gradual increase；The top is in flat duckbill；The service portion is around service portion longitudinal axis from top to bottom by twice Turn-back extends, so that the curved surface that the two side surrounding surfaces formation of service portion distorts in opposite direction.

Preferably, the torsion twice extends to following form：The top is counterclockwise or torsion clockwise extends to Middle part and windup-degree incrementally increases from top to bottom, when reaching middle part, windup-degree is 65 °~45 °；Continue turn-back at middle part It extends to lower part and windup-degree gradually gradually increases from top to bottom, when reaching lower part, windup-degree reaches 5 °~40 °.

Preferably, the top surface on the top is designed in designed arc-shaped appearance or rounded corner, the arc surface or Chamfering fillet surface with Two side surrounding surface intersection arc transitions of service portion.

Preferably, torsion extends to middle part counterclockwise or clockwise on the top, the windup-degree at middle part for 40 °~ 50 °, the middle part turn-back extends to lower part, lower part windup-degree for 15 °~25 ° and/or, the top, middle part and under Portion is integrally formed.

Preferably, the effect cross section incrementally increases from top to bottom, the cross section of middle and lower part is circle, described The cross section at middle part is class ellipse, and the cross section on the top is in quadrangle, and the cross section of the service portion is from the circle of lower part The gradual change of shape face is to the class ellipse face at middle part, and the gradual change that continues is to the quadrilateral surface on top.

Preferably, the rounded corner angle of the top surface is 118 °~120 °.

It is a further object to provide a kind of novel puncture device, which includes novel puncture described above Needle and handle.The handle includes Paracentesis needle holder, and the Paracentesis needle holder is connect with connecting portion and internal connection.

Preferably, the handle includes Paracentesis needle holder and lever, the middle part of the lever is equipped with arc convex, the arc Inner concave is formed between shape protrusion and Paracentesis needle holder；The length of the lever is 35~55cm；And/or the Paracentesis needle holder with Lever is integrally formed.

It is a further object to provide a kind of novel puncture device, which includes novel puncture described above Device and sheath assembly, described sleeve pipe component are used in combination with novel puncture device for Minimally Invasive Surgery.

It is a further object to provide a kind of application method of novel puncture device described above, the users Method wears hold to be blind, specifically includes following steps：Palm center is leaned against to the arc convex of lever, passes through the interior outward turning of wrist Turn, musculature is pushed aside using the top of puncture needle, musculature is then strutted by gradual widened middle part；

Or, the application method wears hold to be non-blind, specifically includes following operating procedure：It is peeped in being inserted into Paracentesis needle holder Palm center is leaned against the arc convex of lever, Paracentesis needle holder is headed at the tiger's jaw of palm by mirror, by the inside and outside rotation of wrist, Musculature is pushed aside using the top of puncture needle, and musculature is then strutted by gradual widened middle part.

Compared with prior art, the invention has the advantages that：

As shown in Figure 1, myocyte's is structurally characterized in that into the cell containing a large amount of myofilament there is the characteristic of contractile motion, Each muscle cell general appearance is fusiform or even threadiness, you can be softened, and can automatic attaching after strutting.

Present inventor has creatively used duckbill top, takes full advantage of biosimulation, in use, sharp Musculature cell is pushed aside with top.When pushing musculature aside, axial upper gradually widened lateral dimension and two are utilized The side surrounding surface of distortion struts muscle cell.After the completion of operation, puncture needle can be easily extracted, musculature can be closed voluntarily at this time Close, no bleeding or almost without bleeding occur.

Gradually expand from the lateral dimension of top to lower part, gradually slowly strut muscle cell, reduce patient suffering.

The top surface on top is designed for circular arc or rounded corner, using top integrally in flat duckbill design, while pushing aside, is kept away The damage to organ is exempted from, when the angle of rounded corner is 118 °~120 °, the dynamics for pushing muscle aside is maximum, while does not cause to machine The damage of body.

Using the lever equipped with arc convex, the power thrusts of doctor are consistent with puncturing direction, eliminate in existing handle It punctures direction and power thrusts is inconsistent, rubber sleeve or puncture outfit enter the defects of abdominal cavity is inconvenient.

According to whether being used cooperatively with endoscope, the present invention provides two different application methods, are conveniently operated.

Description of the drawings

Fig. 1 is the structure diagram of muscle cell；

Fig. 2 is the structure diagram that embodiment 1 provides the puncture needle with arc-shaped top surface；

Fig. 3 is the front view of puncture needle shown in Fig. 2；

Fig. 4 is the side view of puncture needle shown in Fig. 2；

Fig. 5 is the bottom view of puncture needle shown in Fig. 2；

Fig. 6 provides the structure diagram of the puncture needle with rounded corner top surface for the present invention；

Fig. 7 is the bottom view of puncture needle shown in fig. 6；

The partial enlarged view of the rounded corner top surface of puncture needle shown in Fig. 8 bitmaps 6；

Fig. 9 is the sectional view of puncture needle shown in FIG. 1；

Figure 10 is the structure diagram of handle provided by the invention；

Figure 11 is the front view of non-blind threading method hold；

Figure 12 is 45 ° of multi-angled views of non-blind threading method hold；

Figure 13 is the schematic diagram of blind threading method hold；

Figure 14 is the use state diagram of puncture needle of the present invention and traditional puncture needle；

Figure 15 is that puncture needle provided by the invention enters the state diagram for extracting muscle cell.

Specific embodiment

Referred to herein as " duckbill " refers to duckbill or class duckbill.

Cited such as " on ", " under " in the present invention, "left", "right", " in " term, be merely convenient to the bright of narration , and without the effect for limiting the scope of the invention.

Embodiment 1

As shown in Fig. 2, a kind of abdominal puncture needle, including connecting portion 1 and service portion 2, the service portion includes front arc, after Two side surrounding surfaces 24,25 of cambered surface and left and right, as shown in figure 3, dividing service portion 2 for top 23, middle part 22 and lower part 21, top 23 Lower part 21 is extended to, and gradually expand on lateral dimension by middle part 22；As shown in Figures 4 and 5, top 23 is around service portion axis Torsion extends to middle part 22, and middle part 22 extends to lower part 21 around the torsion of service portion axis, and top 23 to middle part and middle part 22 to The torsional direction of lower part 21 on the contrary, so as to spatially realize during service portion extends to middle part on top, frontal arc towards Rear arc is reversed；And when extending to lower part at middle part, backarc forward reverse by cambered surface, and two side surrounding surfaces of service portion are formed along phase The curved surface 24,25 (as shown in the drawing) of negative direction distortion；The top 23 is in flat duckbill, makes full use of imitative biology, gently Pine pushes muscle cell aside；And the acting surface contacted with body of service portion is extended integrally in distortion by turn-back twice Shape.

As shown in figure 3, the top 23 is counterclockwise or clockwise reverse extends to middle part 22, from top 23 to middle part 22 Windup-degree incrementally increases, and the torsion of middle part 22 extends to lower part 21, and the windup-degree from middle part 22 to lower part 21 gradually increases, with Make the angle that two side surrounding surfaces 24,25 of service portion are reversed at middle part maximum, in this way, the front and rear cambered surface of service portion is spatially Form uneven concave surface；Successively, the windup-degree from top 23 to middle part 21 becomes larger, and reaches 60 ° when reaching middle part 22 ~15 °, the windup-degree of middle part 22 to lower part 21 gradually increases, and reaches 5 °~40 ° when reaching lower part 21, as shown in figure 4, described 4 total length of service portion is 20.25cm；Along service portion longitudinal axis, gradually torsion extends to middle part 22 counterclockwise on the top 23, turns round Gyration gradually increases, and when apart from 23 10.25cm of top, windup-degree reaches 45 °；It continues along service portion at the middle part 22 Longitudinal axis gradually extends to lower part 21 clockwise, and windup-degree incrementally increases, and windup-degree reaches 20 ° when reaching lower part 21.

Further, the top 23, middle part 22 and lower part 21 are integrally formed.

The top surface on the top 23 and two side surrounding surfaces, 24, the 25 intersection arc transition of service portion, the top surface design Existing pointed tip is given up, using the flexible undamaged structure to body, for example, as shown in figure 5, top surface is set for circular arc It counts 26 or for example, as shown in Figures 6 and 7, the top surface on top 23 is rounded corner 27, and the top surface designed in circular arc or rounded corner is blunt Property pushes musculature aside, and muscle cell will not be caused to damage.As shown in figure 8, when the top surface on top is rounded corner, push aside Dynamics increases, and especially when the angle of rounded corner is 118 ° -120 °, doctor is easier to push muscle cell aside, and can be avoided The damage caused by muscle cell.

In order to further illustrate the invention, as shown in figure 9, the cross section of middle part 22 to lower part 21 is passed through on the top 23 Size is in the formation incrementally increased, and the cross section of the lower part 21 is circle, and the cross section at the middle part 22 is oval for class, institute The cross section substantially quadrangle on top 23, the circular cross section gradual change to class elliptic cross-section are stated, the class ellipse is cut Face gradual change is to quadrangular section.In this way, when pushing muscle cell aside using top arc surface or Chamfering fillet surface, gradually widened middle part Muscle cell is strutted with lower part.

Wherein, connecting portion is column type bar 1, and the lower part of the cylindrical rod 1 and service portion 2 is axially connected together or integrated Molding.

The puncture needle can be used for stomach wall or wall of the chest Minimally Invasive Surgery.

Coordinate for convenience with imaging devices such as endoscopes, the connecting portion 1 is hollow structure, and the service portion 2 of front end is Transparent material is made.

Embodiment 2

A kind of abdominal cavity puncture outfit, the puncture outfit include abdominal puncture needle described in embodiment 1 and handle, and the handle can be with For the handle that the prior art provides, handle includes Paracentesis needle holder；Puncture needle is plugged in Paracentesis needle holder, it is preferable that the present invention carries For a kind of novel handle, the handle includes Paracentesis needle holder 4 and lever 3, and the Paracentesis needle holder 4 is axially connect with connecting portion 1, Connecting portion 1 is hollow tube, and the Paracentesis needle holder is equipped with axial imaging instrument channel 41, and the connecting portion 1 is hollow structure, that is, is worn Pricker seat 4 is connected with connecting portion 1, for the plant of the imaging devices such as endoscope, convenient for users to that can grasp Minimally Invasive Surgery at any time Puncture situation.

The lever 3 is connect with 4 side of Paracentesis needle holder, and the length of the lever 3 is 35~45cm；3 middle part of lever Region is equipped with arc convex 31, inner concave is formed between the arc convex 31 and Paracentesis needle holder 4, the arc convex 31 is backward Bending extension, entire lever are adapted to the hand physiology of people into airflow design, through the multiple PRACTICE OF DESIGN of inventor, find to work as When the length of the lever is 35~55cm, application and control dynamics is facilitated to meet the design of ergonomics, institute to puncture needle The left and right side for stating lever 3 is in the curved surface 32 slightly to concave, facilitates fingerhold, it is preferable that the Paracentesis needle holder 4 and lever 3 It is integrally formed.

The bottom surface of the lever 3 be hollow structure, simple in structure, light weight.

Embodiment 3

A kind of abdominal paracentesis device, the device include the abdominal cavity puncture outfit and sheath assembly described in embodiment 2, the puncture Needle is plugged in casing.

The application method of the sting device is divided into two kinds：

Non-blind threading method：Endoscope is inserted into Paracentesis needle holder, at this time doctor puncture when, can be observed by display in Scene before sight glass, whether doctor is to completing to be punctured with and getting information about.Specifically operating method is：As shown in figure 11, by hand Palm center is against the arc convex of lever, the edge of Paracentesis needle holder through-hole is headed on as shown in figure 12, at tiger's jaw, by wrist Outer rotation pushes musculature aside using the top of puncture needle, then struts musculature by gradual widened middle part；It is such Hold to puncture more laborsaving.

Blind threading method：Puncture outfit mismatches endoscope use；As shown in figure 13, lever and puncture needle will be pressed at the tiger's jaw of hand On the curved surface being recessed between seat, doctor firmly completes to puncture by the centre of the palm.Musculature, Ran Houtong are pushed aside using the top of puncture needle It crosses the middle part become larger and top and struts musculature, power thrusts are consistent with puncturing direction.

Comparative example

By traditional puncture needle compared with the puncture process for the puncture needle that the embodiment of the present invention 1 provides：

Traditional puncture needle shown on the right of Figure 14, more smoothly punctures, traditional disposable puncture to realize Device head end is sharp and is provided with two sharp blades on both sides.Sharp blade directly scratches, cuts off abdomen in puncture process Wall muscle cell tissue, and sharp head end may assassinate internal in an instant in puncture needle breakthrough stomach wall, can cause Internal haemorrhage, it is serious to cause death.

The puncture needle that embodiment 1 provides, as shown in Figure 14 left sides, the top surface arc surface of upper part is by the interior of doctor's wrist Muscle cell is opened in the outward turning transfer, and with going deep into for puncture, service portion integrally reverses the curved surface of the distortion of formation and is gradually rounded Middle part and lower part replace traditional puncture outfit blade a little strut cell tissue rather than cut open tissue.Breaking through stomach wall In a flash, it can effectively prevent stabbing organ without the top of wedge angle.After the completion of operation, as a result of push aside cell rather than The mode of cell is cut, musculature can be voluntarily closed, and without bleeding.In this course, doctor is needed along the side of puncture To firmly, wrist also needs to ceaselessly inside and outside rotation, until breaking through stomach wall.After the completion of surgical procedure, puncture needle is extracted, due to making Be in the curved surface of a distortion with the surface of portion's entirety, that is, while strutting muscle cell, the contact surface of service portion and muscle is small, with The simple circular conical surface or the conical surface of spiral that the prior art provides are compared, and frictional force is small, small to the frictionally damage of muscle and organ, It easily extracts, mitigates patient suffering.Figure 15 presents 1. puncture needles, and completely into --- 2. puncture needles extract half ---, 3. wear The state of muscle cell when pricker will be extracted completely, the results showed that puncture needle service portion completely into abdominal cavity muscle cell When, non-bleeding；And when puncture outfit extracts half, muscle cell has begun automatic attaching together, until puncturing When device will be extracted completely, bleeding is still had not seen, and automatic attaching has been together substantially for muscle.

Other designs：The flat duckbill of lower part is replaced with cylindrical or class cylinder or will by applicant of the present invention Middle part and top replace with cone type or the cone platform shape with spiral alveolar；The result shows that：1. justified using cylindrical or class The top of cylindricality is needed using larger active force, and is punctured direction and be difficult to control.2. use the middle part and lower part of cone type Stomach wall is not easily accessible, and contact area is big, be not drawn out easily.3. use conical helix bench-type, although drilling force is larger, frictional force Greatly, easily the myocyte of contact is caused to damage, and be not drawn out easily.

Therefore it is provided by the invention that there is flat duckbill and the curved surface integrally distorted is formed in service portion, it is convenient to dial It while opening and strut muscle, also easily extracts, almost or without bleeding occurs, while the muscle cell area contacted subtracts Few, automatic healing is quick, is effectively reduced the pain of patient.

The most preferred embodiment of invention has illustrated, the various change made by those skilled in the art or remodeling all without departing from The scope of the present invention.