CN210095861U

CN210095861U - Puncture mechanism for blocking blood flow in laparoscopic surgery

Info

Publication number: CN210095861U
Application number: CN201920232831.XU
Authority: CN
Inventors: 钟佰清; 李凤玉; 姚娇
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-02-22
Filing date: 2019-02-22
Publication date: 2020-02-21
Anticipated expiration: 2029-02-22

Abstract

The utility model discloses a puncture mechanism for blocking the blood flow in the laparoscopic surgery, which comprises a puncture sheath and a puncture needle; the puncture needle comprises a needle head, a needle rod and a needle tail, a working cavity for the needle head, the needle rod and laparoscopic endoscopic forceps to pass through is axially arranged in the puncture sheath, and the diameter of the needle tail of the puncture needle is larger than the inner diameter of the working cavity; the puncture mechanism has a puncture state and a blocking state; when the puncture mechanism is in a puncture state, the needle rod of the puncture needle is arranged in the working cavity, and the needle head of the puncture needle protrudes out of the puncture sheath; when the puncture mechanism is in a blocking state, the puncture needle is pulled out of the working cavity, a blocking line penetrates through the working cavity of the puncture sheath, and the front end of the puncture sheath abuts against the blocking part. The utility model discloses can enough puncture can replace original hollow metal sleeve pipe when blocking the blood flow again, mechanism easy operation can shorten the operation time greatly.

Description

Puncture mechanism for blocking blood flow in laparoscopic surgery

Technical Field

The utility model relates to a puncture equipment field, concretely relates to laparoscopic surgery blood flow blocks and uses puncture mechanism.

Background

More and more operations are currently performed laparoscopically, requiring the occlusion of blood vessels after the pneumoperitoneum is established and before the resection step is performed. In a traditional operation, a blood vessel is clamped by using titanium forceps and the like so as to block the blood vessel, but the titanium forceps easily damage the blood vessel.

In order to reduce the damage to the blood vessel, it is proposed to block the blood vessel by using a blocking thread (generally a cotton thread), specifically, the cotton thread is passed around the blocking part, such as the hepatic duodenal ligament, then both ends of the cotton thread are passed through a hollow metal sleeve, and finally the cotton thread is tightened to block the blood flow.

However, the existing metal tube needs to be provided with a special hook to enable the cotton thread to pass through, and the hollow metal tube and the hook need to be sterilized after each use, so that the operation steps are complicated, and the operation time is long.

In view of the above, the present inventors have made extensive studies on the above-mentioned drawbacks of the prior art, and have made this invention.

SUMMERY OF THE UTILITY MODEL

The main object of the utility model is to provide a laparoscopic surgery blood flow blocks and uses puncture mechanism can enough puncture can replace original hollow metal sleeve pipe when blocking the blood flow again, and mechanism easy operation can shorten the operation time greatly.

In order to achieve the above purpose, the solution of the present invention is:

a puncture mechanism for blocking blood flow in laparoscopic surgery comprises a puncture sheath and a puncture needle; the puncture needle comprises a needle head, a needle rod and a needle tail, a working cavity for the needle head, the needle rod and laparoscopic endoscopic forceps to pass through is axially arranged in the puncture sheath, and the diameter of the needle tail of the puncture needle is larger than the inner diameter of the working cavity;

the puncture mechanism has a puncture state and a blocking state; when the puncture mechanism is in a puncture state, the needle rod of the puncture needle is arranged in the working cavity, and the needle head of the puncture needle protrudes out of the puncture sheath; when the puncture mechanism is in a blocking state, the puncture needle is pulled out of the working cavity, a blocking line penetrates through the working cavity of the puncture sheath, and the front end of the puncture sheath abuts against the blocking part.

Furthermore, a sealing seat made of elastic materials is fixedly arranged at one end, close to the needle tail, of the puncture sheath, a sealing hole for the puncture needle and the endoscope forceps to penetrate is formed in the middle of the sealing seat, and the diameter of the sealing hole is smaller than that of a needle rod of the puncture needle and that of an endoscope cavity.

Further, the sealing seat is bonded to the puncture sheath.

Further, the sealing seat is made of a rubber material.

Furthermore, an accommodating cavity for embedding the puncture sheath is formed in the sealing seat.

Furthermore, a counter bore used for reducing the thickness of the elastic material around the sealing hole is arranged on the sealing seat, and the sealing hole is located in the center of the counter bore.

Further, the front end of the puncture sheath is provided with a round mouth for preventing blood vessels from being damaged.

Furthermore, the needle tail of the puncture needle is provided with a spherical crown surface.

After the structure is adopted, the utility model relates to a laparoscopic surgery blood flow blocks and uses puncture mechanism, the puncture mechanism that is in the puncture state pierces through abdominal tissue under the effect of pjncture needle, takes out afterwards from the pjncture needle. The laparoscopic forceps carry the blocking line to enter the abdominal cavity through the working cavity of the puncture sheath, and the blocking line is wound around the blocking part and is drawn out of the working cavity of the puncture sheath under the assistance of the laparoscope. When the blocking is needed, the puncture sheath is pushed towards the abdomen, the puncture sheath is propped against the blocking part, and the cotton thread is tensioned and fixed, so that the blood flow blocking can be realized.

Compared with the prior art, the puncture sheath is pushed to the abdominal cavity for blocking through the disposable puncture sheath, the disinfection step of the original hollow metal sleeve is avoided, and the endoscope forceps of the laparoscope can penetrate through the working cavity of the puncture sheath, so that the blocking part can be surrounded by the endoscope forceps which are provided with the blocking line and penetrate out of the working cavity under the action of the endoscope forceps. The utility model avoids the use of specially-made hooks for threading, and simultaneously avoids the need of separately arranging the wound for placing the hollow metal sleeve, thus having simple and convenient operation; meanwhile, the disinfection time of the instrument is reduced, the operation time is greatly reduced, and the operation efficiency is improved.

Drawings

Fig. 1 is a schematic view of the whole structure of a puncture mechanism for blocking blood flow in laparoscopic surgery.

Fig. 2 is an exploded view of the blood flow blocking puncture mechanism for laparoscopic surgery of the present invention.

Fig. 3 is a schematic sectional structure view of the blood flow blocking puncture mechanism for laparoscopic surgery of the present invention.

Fig. 4 is a perspective view of the puncture sheath.

Fig. 5 is an exploded view of the puncture sheath and the seal holder.

Fig. 6 is a schematic cross-sectional view of the seal seat.

Fig. 7 is a schematic view of a blocking wire and a piercing sheath blocking blood flow.

In the figure: puncturing the sheath 1; a working chamber 11; a seal holder 12; a seal hole 121; a housing cavity 122; a counterbore 123; a puncture needle 2; a needle 21; a needle shaft 22; a needle tail 23; a spherical crown surface 231; abdominal tissue 100; a blocking site 200; blocking the line 300.

Detailed Description

In order to further explain the technical solution of the present invention, the present invention is explained in detail by the following embodiments.

As shown in fig. 1 to 7, the puncture mechanism for blocking blood flow in laparoscopic surgery according to the present invention includes a puncture sheath 1 and a puncture needle 2; the puncture needle 2 comprises a needle head 21, a needle rod 22 and a needle tail 23, a working cavity 11 for the needle head 21, the needle rod 22 and laparoscopic endoscopic forceps to pass through is axially arranged in the puncture sheath 1, and the diameter of the needle tail 23 of the puncture needle 2 is larger than the inner diameter of the working cavity 11;

the puncture mechanism has a puncture state and a blocking state; when the puncture mechanism is in a puncture state, the needle rod 22 of the puncture needle 2 is arranged in the working cavity 11, and the needle head 21 of the puncture needle 2 protrudes out of the puncture sheath 1; when the puncture mechanism is in a blocking state, the puncture needle 2 is pulled out from the working cavity 11, a blocking line 300 penetrates through the working cavity 11 of the puncture sheath, and the front end of the puncture sheath 1 abuts against the blocking part 200.

Thus, the utility model relates to a puncture mechanism for blocking laparoscopic surgery blood flow, the puncture mechanism in puncture state pierces through abdominal tissue 100 under the effect of pjncture needle 2, then takes out from pjncture needle 2. The laparoscopic endoscopic forceps carry the break-resistant wire 300 through the working cavity 11 of the puncture sheath 1 into the abdominal cavity, and the break-resistant wire 300 is drawn out from the working cavity 11 of the puncture sheath 1 around the break-resistant portion 200 with the aid of the laparoscopic endoscope and other endoscopic forceps. When blocking is needed, the puncture sheath 1 is pushed towards the abdomen, the puncture sheath 1 is propped against the blocking part 200, and the cotton thread is tensioned and fixed, so that blood flow blocking can be realized. When blood flow needs to be blocked, the cotton thread is tightened and then fixed by a clamp (not shown in the figure). The cotton thread relaxes the blood flow to restore normal flow without blocking the blood flow and releasing the clamp.

In order to avoid excessive discharge of carbon dioxide gas in the abdominal cavity, a sealing seat 12 made of an elastic material is preferably fixedly arranged at one end of the puncture sheath 1 close to the needle tail 23 of the puncture needle 2. Further, the sealing seat 12 is bonded to the puncture sheath 1. The middle part of the sealing seat 12 is provided with a sealing hole 121 for the puncture needle 2 and the endoscopic forceps to pass through, and the diameter of the sealing hole 121 is smaller than the diameter of the needle rod 22 of the puncture needle 2 and the diameter of the endoscopic cavity. Thus, the sealing hole 121 is spread by the needle rod 22 of the puncture needle 2 or the endoscopic forceps, and the sealing hole 121 is tightly attached to the needle rod 22 of the puncture needle 2 or the endoscopic forceps under the elastic action of the elastic material, so that the inside and the outside are isolated.

Preferably, the sealing seat 12 is made of a rubber material. The rubber material has good elasticity, and the material is easy to obtain and process.

In order to achieve a tight fixation of the puncture sheath 1 to the sealing seat 12, the sealing seat 12 is preferably provided with a receiving cavity 122 for the puncture sheath 1 to be inserted into. Thus, the inner side wall of the sealing seat 12 is attached to the side wall of the puncture sheath 1, so that the puncture sheath has a larger contact area and is beneficial to mutual fixation.

Preferably, the seal seat 12 is provided with a counter bore 123 for reducing the thickness of the elastic material around the seal hole 121, and the seal hole 121 is located in the center of the counter bore 123. By providing the counterbore 123, the thickness of the elastic material around the sealing hole 121 is reduced, so that the needle shaft 22 of the puncture needle 2 or the endoscopic forceps can more easily pass through the sealing hole 121 while ensuring the strength of the sealing seat 12. The sealing seat 12 also serves to cushion the needle tail 23 of the puncture needle 2 during puncture.

Preferably, the front end of the puncture sheath 1 is provided with a round mouth for preventing damage to the blood vessel. The front end of the puncture sheath 1 abuts against the blocking site 200, and since the blocking site 200 has a blood vessel, it is necessary to avoid the injury as much as possible. The round design reduces the sharpness of the front end of the puncture sheath 1.

Preferably, the needle tail 23 of the puncture needle 2 is provided with a spherical cap surface 231. When in use, the palm of the doctor abuts against the spherical crown surface 231 to puncture the puncture mechanism on the abdomen of the patient. The design of the spherical cap surface 231 can greatly reduce the pressure of the puncture needle 2 on the palm of the doctor.

Compared with the prior art, the disposable puncture sheath 1 is pushed to the abdominal cavity to realize blocking, the disinfection step of the original hollow metal sleeve is avoided, and the laparoscopic forceps can penetrate through the working cavity 11 of the puncture sheath 1, so that the blocking part 200 can be surrounded by the endoscopic forceps with the blocking line 300 penetrating through the working cavity 11 and penetrating out of the working cavity 11 under the action of the endoscopic forceps. The utility model avoids the use of specially-made hooks for threading, and simultaneously avoids the need of separately arranging the wound for placing the hollow metal sleeve, thus having simple and convenient operation; meanwhile, the disinfection time of the instrument is reduced, the operation time is greatly reduced, and the operation efficiency is improved.

The above embodiments and drawings are not intended to limit the form and style of the present invention, and any suitable changes or modifications made by those skilled in the art should not be construed as departing from the scope of the present invention.

Claims

1. A puncture mechanism for blocking blood flow in laparoscopic surgery is characterized by comprising a puncture sheath and a puncture needle; the puncture needle comprises a needle head, a needle rod and a needle tail, a working cavity for the needle head, the needle rod and laparoscopic endoscopic forceps to pass through is axially arranged in the puncture sheath, and the diameter of the needle tail of the puncture needle is larger than the inner diameter of the working cavity;

2. The lancing mechanism for blocking blood flow in laparoscopic surgery as claimed in claim 1, wherein a sealing seat made of elastic material is fixedly arranged at one end of said puncture sheath close to the needle tail of the puncture needle, a sealing hole for passing said puncture needle and the endoscopic forceps is arranged in the middle of said sealing seat, and the diameter of said sealing hole is smaller than the diameter of the needle shaft of the puncture needle and the diameter of the endoscopic cavity.

3. The laparoscopic blood flow blocking puncture mechanism of claim 2, wherein said seal holder is bonded to said puncture sheath.

4. The laparoscopic blood flow blocking puncture mechanism of claim 2, wherein said seal holder is made of a rubber material.

5. The laparoscopic blood flow blocking puncture mechanism of claim 2, wherein said sealing seat is provided with a receiving cavity for said puncture sheath to be inserted.

6. The lancing mechanism for blocking blood flow in laparoscopic surgery of claim 2, wherein said sealing seat is provided with a counterbore for reducing the thickness of the elastic material around said sealing hole, said sealing hole being located at the center of said counterbore.

7. The laparoscopic blood flow occlusion puncture mechanism of claim 1, wherein said puncture sheath has a round mouth at a front end thereof for preventing damage to a blood vessel.

8. The laparoscopic blood flow blocking puncture mechanism of claim 1, wherein said needle tail of said puncture needle is provided with a spherical crown surface.