CN213787544U - Portal vein puncture and liver biopsy integrated needle - Google Patents
Portal vein puncture and liver biopsy integrated needle Download PDFInfo
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- CN213787544U CN213787544U CN202022570341.6U CN202022570341U CN213787544U CN 213787544 U CN213787544 U CN 213787544U CN 202022570341 U CN202022570341 U CN 202022570341U CN 213787544 U CN213787544 U CN 213787544U
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Abstract
The utility model discloses a portal vein puncture and liver biopsy integrated needle, include: a sleeve; the puncture needle core can be arranged in the sleeve; a biopsy needle core disposable within the cannula; the handle is communicated with the two ends of the handle along the direction of the symmetry axis, one end of the handle is connected with the sleeve, and the other end of the handle is detachably connected with the handle pushing piece; one end of the handle pushing piece is a connecting part which can be fixedly connected with the puncture needle core or the biopsy needle core. The utility model discloses the one end detachable of handle sets up the handle impeller, and is equipped with on the handle impeller connecting portion can with puncture needle core or biopsy needle core fixed connection, can adopt with the complete equipment to carry out portal vein puncture and liver biopsy, need not to establish puncture passageway again, has optimized the puncture route, makes things convenient for the doctor to operate, avoids causing the secondary injury to the patient.
Description
Technical Field
The utility model relates to the technical field of medical equipment, especially, relate to an integrated needle of portal vein puncture and liver biopsy.
Background
Transjugular Intrahepatic Portosystemic Shunt (TIPS) is a new interventional treatment technology for treating portal hypertension, namely, a puncture cannula at a jugular vein is inserted into a hepatic vein through an inferior vena cava, the hepatic parenchyma is punctured into an intrahepatic portal vein from the hepatic vein, and after the puncture channel is expanded, a metal bracket is placed to establish an effective portal shunt channel, so that the aim of reducing the pressure of the portal vein is fulfilled. Many existing puncture instruments, such as a jugular vein intrahepatic puncture instrument of the Cuck company, comprise a puncture needle and an outer sheath, but the puncture needle can only be used for puncture, and because a portal hypertension patient often accompanies liver cirrhosis, liver biopsy needs to be carried out simultaneously, if biopsy is needed, another set of equipment is needed, the steps are complicated, the operation of a doctor is inconvenient, a biopsy channel needs to be punctured again, and secondary injury is caused to the patient.
In view of this, there is a need to improve the existing jugular vein intrahepatic puncture apparatus to realize the integration of portal vein puncture and hepatic biopsy.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a portal vein puncture and liver biopsy integrated needle for solve prior art, portal vein puncture needle and the problem that the liver biopsy needle can not integrate.
In order to solve the above problem, the utility model adopts the following technical scheme:
provided is a portal vein puncture and liver biopsy integrated needle, comprising:
a sleeve;
a lancet core, said lancet core being disposable within said cannula;
a biopsy needle core disposable within the cannula;
the two ends of the handle along the direction of the symmetry axis are communicated, one end of the handle is connected with the sleeve, and the other end of the handle is detachably connected with the handle pushing piece;
one end of the handle pushing piece is a connecting part which can be fixedly connected with the puncture needle core or the biopsy needle core.
In the above scheme, the handle pushing member and the sleeve are coaxially arranged, and the handle pushing member is provided with scales.
In the above scheme, the handle is provided with a motor and drives the handle pushing piece to move along the direction of the symmetry axis of the handle.
In the above scheme, the handle pushing member includes a fixed member and a rotating member, the fixed member is disposed in the handle, an internal thread is disposed inside the fixed member, an external thread adapted to the internal thread is disposed on an outer side surface of the rotating member, and the internal thread and the external thread are matched to rotate to enable the handle pushing member to move along a symmetry axis direction of the handle.
In the above scheme, the needle tip of the biopsy needle core is in an outward-expanding bifurcation structure, and the bifurcation part is in a hollow structure.
In the above aspect, the bifurcated structure of the biopsy needle core forms a substantially closed accommodation space within the cannula.
In the above-mentioned aspect, the needle tip of the puncture needle core is a straight line in a natural state.
In the above aspect, the needle tip of the puncture needle core is made of an elastic memory alloy and is bent in a natural state.
In the above scheme, the puncture needle core is a solid needle.
In the above scheme, the puncture needle core is a hollow needle.
The utility model discloses a technical scheme can reach following beneficial effect:
the one end detachable of handle sets up the handle impeller, and is equipped with connecting portion on the handle impeller and can with puncture needle core or biopsy needle core fixed connection, can adopt with the complete sets of equipment to carry out portal vein puncture and liver biopsy, need not to establish the puncture passageway again, has optimized the puncture route, makes things convenient for doctor's operation, avoids causing the secondary injury to the patient.
Drawings
In order to more clearly illustrate the technical solution of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly introduced below to form a part of the present invention, and the exemplary embodiments and the description thereof of the present invention explain the present invention and do not form an improper limitation to the present invention. In the drawings:
fig. 1 is a schematic view of the overall structure of a needle integrated with portal vein puncture and liver biopsy disclosed in example 1 of the present invention;
FIG. 2 is a cross-sectional view of the coupling of the lancet or biopsy needle disclosed in embodiment 1 of the present invention with the handle pusher;
FIG. 3 is a partial enlarged view at A;
FIG. 4 is a cross-sectional view of a biopsy needle core disposed within a cannula according to example 1 of the present invention;
FIG. 5 is a cross-sectional view of a biopsy needle core extending sleeve as disclosed in example 1 of the present invention;
fig. 6 is a schematic view of the biopsy needle core disclosed in embodiment 1 of the present invention after sampling;
FIG. 7 is a sectional view of the puncture needle core disclosed in example 1 of the present invention placed in a cannula;
FIG. 8 is a cross-sectional view of the disclosed lancet core extending out of the cannula in accordance with example 1 of the present invention;
FIG. 9 is a sectional view of the puncture needle core disclosed in example 2 of the present invention placed in the casing;
fig. 10 is a sectional view of the puncture needle core extending sleeve disclosed in embodiment 2 of the present invention.
The following reference signs are specifically included:
a sleeve-10; a puncture needle core-20; biopsy needle core-30; a handle-40; a handle pusher-41; external thread-42; -43 internal threads; a connecting part-411.
Detailed Description
To make the purpose, technical solution and advantages of the present invention clearer, the following will combine the embodiments of the present invention and the corresponding drawings to clearly and completely describe the technical solution of the present invention. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example 1
As shown in fig. 1-10, the utility model provides a portal puncture and liver biopsy integrated needle, including sleeve 10, puncture needle core 20, biopsy needle core 30 and handle 40.
The lancet core 20 can be disposed within the cannula 10; a biopsy needle core 30 is disposable within the cannula 10; the two ends of the handle 40 along the direction of the symmetry axis are communicated, one end is connected with the sleeve 10, and the other end is detachably connected with the handle pushing piece 41; one end of the handle pushing member 41 is a connecting portion 411, and the connecting portion 411 can be fixedly connected with the puncture needle core 20 or the biopsy needle core 30. Handle 40's one end detachable sets up handle impeller 41, and is equipped with connecting portion 411 on the handle impeller 41 and can with puncture needle core 20 or biopsy needle core 30 fixed connection, can adopt with complete equipment to carry out portal vein puncture and liver biopsy, need not to establish the puncture passageway again, has optimized the puncture route, makes things convenient for doctor's operation, avoids causing the secondary injury to the patient.
The handle pushing member 41 is coaxially arranged with the cannula 10, and since the cannula 10 is coaxially arranged with the puncture needle core 20 or the biopsy needle core 30, the handle pushing member 41 is coaxially arranged with the puncture needle core 20 or the biopsy needle core 30, thereby facilitating the control of the needle inserting and withdrawing direction. The handle pushing member 41 is provided with a scale. The needle insertion depth can be conveniently observed.
The handle pushing piece 41 comprises a fixed piece and a rotating piece, the fixed piece is arranged in the handle 40, an internal thread 43 is arranged in the fixed piece, an external thread 42 matched with the internal thread 43 is arranged on the outer side face of the rotating piece, and the internal thread 43 and the external thread 42 are matched to rotate to enable the handle pushing piece 41 to move along the direction of the symmetry axis of the handle 40.
The handle pushing piece 41 is fixedly connected with the puncture needle core 20 or the biopsy needle core 30 and then penetrates through an opening at the rear end of the handle 40, the puncture needle core 20 or the biopsy needle core 30 is sleeved in the sleeve 10, when the needle core needs to be replaced, the handle pushing piece 41 and the handle 40 are loosened, the handle pushing piece 41 is taken out for replacing the needle core, and the handle pushing piece 41 is arranged in the handle 40 according to the same mode.
As shown in FIGS. 4 to 6, the biopsy needle core 30 has an outwardly expanding bifurcation structure at the end thereof, and the bifurcation has a hollow structure for storing the sampled tissue; the sleeve 10 is sleeved on the periphery of the biopsy needle core 30, the inner diameter of the sleeve 10 is smaller than the maximum diameter of the biopsy needle core 30 when the end portion is expanded, and after the biopsy needle core 30 clamps the target tissue, the sleeve 10 extends inwards to the biopsy needle core 30 to be accommodated in the sleeve 10, so that sampling is completed. The inner diameter of the cannula 10 is larger than the maximum diameter of the closed end of the biopsy needle core 30, facilitating the retrieval of the sampled biopsy needle core 30 into the cannula 10. And the bifurcated structure of the biopsy needle core 30 forms a substantially closed accommodation within the cannula 10.
The end of the biopsy needle core 30 may be one of a beveled cylindrical, conical, or fusiform shape. In the present embodiment, the end portion is a three-dimensional structure formed by buckling the bottoms of the first conical surface and the second conical surface, which have the same bottom area, in the closed state, so that the internal volume of the end portion is increased, and more target tissues can be conveniently clamped.
As shown in fig. 7 and 8, the lancet core 20 may be a solid needle or a hollow needle. Different puncture needle cores 20 are selected according to different conditions, such as: only a solid needle is needed for liver biopsy, and a hollow needle is needed for portal vein puncture. The needle tip of the puncture needle core 20 is straight in a natural state, and directly penetrates out of the sleeve 10 in use, and the puncture path is straight.
The utility model discloses a portal vein puncture and liver biopsy integrated needle is carrying out portal vein puncture's application method as follows:
the puncture needle core 20 is fixed to the connecting part 411 of the handle pushing member 41, the handle pushing member 41 is put in from the rear end of the handle 40, the puncture needle core 20 is arranged in the cannula 10, the puncture needle core 20 is penetrated into the vicinity of the focus according to a preset puncture channel, the handle pushing member 41 is rotated to cause the puncture needle core 20 to penetrate into the focus, the portal vein stent is placed, and then the handle pushing member 41 is rotated to take the puncture needle core 20 into the cannula, thereby completing the puncture.
The utility model discloses a portal vein puncture and liver biopsy integrated needle is carrying out liver biopsy's application method as follows:
determining whether or not the puncture channel needs to be reestablished, and if not, releasing the handle push member 41 from the handle 40, taking out the handle push member 41, replacing the biopsy needle core 30 with the handle push member 41, putting the handle push member 41 into the rear end of the handle 40, arranging the puncture needle core 20 in the sleeve 10, rotating the handle 40, continuously extending the biopsy needle core 30 to the target tissue, expanding the bifurcation at the target tissue, clamping the target tissue, keeping the needle core 10 still, pushing the sleeve 10 forward, putting the biopsy needle core 30 into the sleeve 10, and clamping the target tissue because the bifurcation of the biopsy needle core 30 needs to be retracted when being put into the sleeve 10. After sampling, gelatin sponge is put into the sleeve 10 to stop bleeding of the wound at the sampling position.
Example 2
As shown in fig. 9 and 10, unlike embodiment 1, the puncture needle core 20 of the present embodiment is made of elastic memory alloy, and is bent in a natural state, and when in use, it penetrates out of the cannula 10, and the puncture path is curved, so that the problem of single puncture path caused by only straight puncture is avoided, and the puncture path can be selected preferentially due to the diversification of puncture angles, thereby facilitating the operation of the doctor.
Example 3
Unlike embodiment 1, in this embodiment, the handle 40 is provided with a motor for driving the handle pusher 41 to control the insertion or retraction of the biopsy needle core 30 and the insertion or retraction of the puncture needle core 20. The motor is used for driving, so that the operation of a doctor is facilitated.
The utility model discloses the one end detachable of handle sets up the handle impeller, and is equipped with on the handle impeller connecting portion can with puncture needle core or biopsy needle core fixed connection, can adopt with the complete equipment to carry out portal vein puncture and liver biopsy, need not to establish puncture passageway again, has optimized the puncture route, makes things convenient for the doctor to operate, avoids causing the secondary injury to the patient.
The embodiments of the present invention have been described with reference to the accompanying drawings, but the present invention is not limited to the above-mentioned embodiments, which are only illustrative and not restrictive, and those skilled in the art can make many forms without departing from the spirit and scope of the present invention.
Claims (10)
1. A portal vein puncture and liver biopsy integrated needle, comprising:
a sleeve;
a lancet core, said lancet core being disposable within said cannula;
a biopsy needle core disposable within the cannula;
the two ends of the handle along the direction of the symmetry axis are communicated, one end of the handle is connected with the sleeve, and the other end of the handle is detachably connected with the handle pushing piece;
one end of the handle pushing piece is a connecting part which can be fixedly connected with the puncture needle core or the biopsy needle core.
2. The integrated portal puncture and liver biopsy needle of claim 1, wherein the handle pusher is coaxially disposed with the cannula, and the handle pusher has a scale disposed thereon.
3. The integrated portal puncture and liver biopsy needle of claim 1, wherein a motor is provided on the handle and drives the handle pusher to move along the axis of symmetry of the handle.
4. The needle of claim 1, wherein the handle pushing member comprises a fixed member and a rotating member, the fixed member is disposed in the handle and has an internal thread formed therein, the rotating member has an external thread formed on an outer side thereof, the external thread and the internal thread are adapted to the internal thread, and the internal thread and the external thread are rotated in cooperation to move the handle pushing member along a symmetry axis of the handle.
5. The integrated needle for portal vein puncture and liver biopsy according to claim 1, wherein the needle tip of the biopsy needle core is of an outwardly expanding bifurcation structure, and the bifurcation part is of a hollow structure.
6. The integrated portal puncture and liver biopsy needle of claim 5, wherein the bifurcation of the biopsy core forms a substantially enclosed receiving space within the cannula.
7. The integrated needle for portal vein puncture and liver biopsy according to claim 1, wherein the needle tip of the puncture needle core is straight in a natural state.
8. The integrated needle for portal vein aspiration and liver biopsy according to claim 1, wherein the needle tip of the puncture needle core is made of elastic memory alloy and is bent in a natural state.
9. The integrated portal puncture and liver biopsy needle according to claim 1, wherein the puncture needle core is a solid needle.
10. The integrated needle for portal vein puncture and liver biopsy according to claim 1, wherein the puncture needle core is a hollow needle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022570341.6U CN213787544U (en) | 2020-11-09 | 2020-11-09 | Portal vein puncture and liver biopsy integrated needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022570341.6U CN213787544U (en) | 2020-11-09 | 2020-11-09 | Portal vein puncture and liver biopsy integrated needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213787544U true CN213787544U (en) | 2021-07-27 |
Family
ID=76966386
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022570341.6U Active CN213787544U (en) | 2020-11-09 | 2020-11-09 | Portal vein puncture and liver biopsy integrated needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213787544U (en) |
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2020
- 2020-11-09 CN CN202022570341.6U patent/CN213787544U/en active Active
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