Hemostasis assembly and biopsy needle suite

Abstract

The utility model relates to an integrated biopsy needle device which comprises a hemostasis assembly and a biopsy needle suite, the hemostasis assembly comprises a catheter and a plugging wire, the far end of the plugging wire can deform in response to different temperatures, and the plugging wire is in a first shape before entering a puncture channel by controlling the temperature of the plugging wire; after the plugging wire enters the puncture channel, the far end part of the plugging wire can be converted into the second shape in response to the temperature of the puncture channel, so that blood vessels on the inner wall of the puncture channel are extruded and coagulated, and direct use of the hemostatic filler is prevented; the hemostasis filler enters the puncture channel and then enters the inner wall blood vessel to cause ectopic embolism, and finally the plugging wire can be withdrawn by pulling the plugging wire towards the near end, so that the device is very convenient to use and is suitable for puncture channels with different inner diameters.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field, concretely relates to a hemostasis assembly and biopsy needle kit. BACKGROUND

[0002] The biopsy needle is a kind of medical instrument for the biopsy of the tumor of the cone of kidney, liver, lung, breast, thyroid, prostate, pancreas, testis, uterus, ovary, body surface and so on and the biopsy of unknown tumor etc. After biopsy puncture is completed, the puncture is pulled out, and the puncture channel is prone to bleeding, and hemostatic drugs or compression hemostasis can only be directed to the epidermis, and the puncture tissue cannot be effectively hemostatic.

[0003] At present, the puncture channel is mainly closed by inserting a strip columnar hemostatic sponge into the puncture channel, and the hemostatic sponge is expanded by absorbing blood in the puncture channel, to achieve the purpose of hemostasis. However, for the puncture channel with small inner diameter, the strip columnar hemostatic sponge is not easy to insert, and the operation is very convenient. The granular hemostatic sponge is small in size, and is convenient to enter the puncture channel with different inner diameters, especially the puncture channel with small inner diameter, but the granular hemostatic sponge has the risk of entering the blood vessel in the puncture channel during the hemostasis process, which can cause ectopic embolism and subsequent hidden trouble. SUMMARY

[0004] The utility model aims at providing a hemostasis assembly with wide application range and convenient operation.

[0005] Another object of the utility model is to provide a biopsy needle kit.

[0006] To achieve the above object, the utility model adopts the technical scheme that:

[0007] A hemostasis assembly for hemostasis of puncture channel after biopsy puncture, comprising:

[0008] A catheter having a through cavity;

[0009] A blocking wire movably arranged in the cavity, with a first shape and a second shape in response to different temperatures at the distal end, the first shape is linear and the maximum diameter is smaller than the inner diameter of the puncture channel, and the second shape has a maximum outer diameter greater than or equal to the inner diameter of the puncture channel and has a passage allowing the hemostatic filler to enter.

[0010] The hemostatic assembly is provided with a plugging wire, the distal end of the plugging wire can be deformed in response to different temperatures, the temperature of the plugging wire is controlled to make the distal end of the plugging wire in a first shape (i.e. linear shape) before entering the puncture channel, so that the distal end of the plugging wire is conveniently entered into the puncture channel, and after entering the puncture channel, the distal end of the plugging wire can be converted into a second shape in response to the temperature of the puncture channel, so that the inner wall blood vessels of the puncture channel are extruded to make the blood coagulate, the direct use of the hemostatic filler is prevented, the hemostatic filler is prevented from entering the inner wall blood vessels to cause ectopic embolism after entering the puncture channel, and the hemostatic assembly is very convenient to use and is suitable for puncture channels with different inner diameters.

[0011] Preferably, the second shape is a spiral shape.

[0012] In some embodiments, the second shape has a plurality of spiral unit rings connected in sequence, and the diameters of each spiral unit ring are equal, so that the second shape is a spiral column.

[0013] In some embodiments, the second shape has a plurality of spiral unit rings connected in sequence, and the diameters of the spiral unit rings gradually increase from bottom to top, so that the second shape is a spiral tower.

[0014] Preferably, the outer side wall of the distal end of the plugging wire is provided with an anticoagulant coating and / or a hydrophilic coating. The anticoagulant coating is beneficial to hemostasis, and the hydrophilic coating has good lubricity and can avoid unnecessary damage caused by friction between the plugging wire and the puncture channel.

[0015] Preferably, the hemostatic assembly further comprises a plugging tube sleeved outside the plugging wire, a plugging wire seat installed at the proximal end of the plugging tube, and the plugging wire is connected to the plugging wire seat.

[0016] Further preferably, the hemostatic assembly further comprises a plugging tube seat connected to the proximal end of the plugging tube.

[0017] Preferably, the hemostatic assembly further comprises a hemostatic filler and a pushing member, the hemostatic filler has a filling state of being filled into the cavity channel, and the pushing member is used to push the hemostatic filler out of the cavity channel and into the puncture channel.

[0018] In some embodiments, the pushing member comprises a pushing rod and a pushing rod seat connected to the proximal end of the pushing rod.

[0019] Further, the pushing tube body has a certain elastic deformation capacity, so as to adapt to the cavity channel with corners.

[0020] Preferably, the hemostatic filler is a gelatin sponge.

[0021] Preferably, the hemostatic filler is in a columnar or granular shape.

[0022] Preferably, the cavity channel comprises a main cavity channel and a branch cavity channel in communication with the main cavity channel, and the one or more hemostatic fillers and the occlusion wire are optionally arranged in the main cavity channel or the branch cavity channel.

[0023] The utility model also provides a biopsy needle kit, including the hemostatic assembly as described above.

[0024] Preferably, the biopsy needle kit further comprises a biopsy needle.

[0025] Further preferably, the biopsy needle comprises a biopsy needle body and a biopsy needle seat connected to the proximal end of the biopsy needle body.

[0026] Due to the above technical scheme, the utility model has the following advantages compared with the prior art:

[0027] The hemostatic assembly comprises a catheter, a hemostatic filler and an occlusion wire, wherein the distal end of the occlusion wire has a first shape and a second shape in response to different temperatures, the distal end of the occlusion wire is controlled to have the first shape of a straight line before entering the puncture channel, so as to facilitate the entry into the puncture channel, and after entering the puncture channel, the distal end of the occlusion wire can be converted into the second shape in response to the temperature of the puncture channel, so as to extrude the inner wall blood vessels of the puncture channel, make them coagulate, prevent the direct use of the hemostatic filler, and prevent the entry of the hemostatic filler into the inner wall blood vessels to cause ectopic embolism after entering the puncture channel. The hemostatic assembly is suitable for puncture channels with different diameters, is very convenient to use, and can effectively avoid the occurrence of ectopic embolism. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 A structural schematic view of a catheter provided for embodiment 1 is shown in the figure;

[0029] Figure 2 A sectional view of a catheter provided for embodiment 1 is shown in the figure;

[0030] Figure 3 A structural schematic view of an occlusion wire assembly provided for embodiment 1 is shown in the figure;

[0031] Figure 4 A sectional view of an occlusion wire assembly provided for embodiment 1 is shown in the figure;

[0032] Figure 5 A structural schematic view of a distal end of an occlusion wire provided for embodiment 1 is shown in the figure;

[0033] Figure 6 A structural schematic view of another distal end of an occlusion wire provided for embodiment 1 is shown in the figure;

[0034] Figure 7 A structural schematic view of a pushing member provided for embodiment 1 is shown in the figure;

[0035] Figure 8 A sectional view of a pusher provided for example 1;

[0036] Figure 9 A structural schematic view of a biopsy needle provided for example 1;

[0037] Figure 10 A sectional view of a biopsy needle provided for example 1;

[0038] Figure 11 A structural schematic view of a hemostatic valve provided for example 1;

[0039] Wherein: 1, catheter; 11, catheter seat; 12, main lumen; 13, branch lumen; 14, hemostatic valve;

[0040] 2, occlusion wire assembly; 21, occlusion wire; 211, spiral unit ring; 212, occlusion wire seat; 213, channel; 22, occlusion tube; 23, occlusion tube seat;

[0041] 3, pusher; 31, push rod; 32, push rod seat;

[0042] 4, biopsy needle; 41, biopsy needle body; 42, biopsy needle seat. DETAILED DESCRIPTION

[0043] The utility model will be further described below in combination with the embodiments shown in the drawings.

[0044] In the following, only certain exemplary embodiments are simply described. As those skilled in the art can realize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the embodiments of the utility model. Therefore, the drawings and the description are considered to be exemplary in nature rather than limiting.

[0045] In the description of the present application, it needs to be understood that the position or location relationship indicated by the terms "far", "near" and the like is defined with the position of the biopsy needle kit in use, wherein the side close to the operator is the proximal end and the side away from the operator is the distal end.

[0046] In the description of the embodiments of the utility model, it needs to be understood that the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more of the features. In the description of the embodiments of the utility model, the meaning of "multiple" is two or more than two, unless otherwise specifically limited.

[0047] In the embodiments of the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can include that the first and second features are in direct contact, or can include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "under", "below" and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0048] The following disclosure provides many different embodiments or examples for implementing different structures of the embodiments of the present application. In order to simplify the disclosure of the embodiments of the present application, the components and settings of specific examples are described below. Of course, they are only examples and the purpose is not to limit the embodiments of the present application. In addition, the embodiments of the present application can refer to the same reference numerals and / or reference letters in different examples, and such repetition is for the purpose of simplification and clarity, which does not indicate the relationship between the various embodiments and / or settings discussed.

[0049] Embodiment 1

[0050] A biopsy needle kit comprises a catheter 1, a biopsy needle 4, a hemostatic filler (not shown in the figure), a pusher 3 and a blocking wire assembly 2.

[0051] Referring to Figure 1 and Figure 2 , the catheter 1 has a through cavity. As preferred, the cavity includes a main cavity 12 and a branch cavity 13, the branch cavity 13 has one or more, preferably communicates with the main cavity 12 and shares the distal end part of the main cavity 12. In the present embodiment, the catheter 1 comprises a hollow main body part and a catheter seat 11 arranged at the upper end of the main body part, the catheter seat 11 has three cavities, namely a sponge cavity, a biopsy cavity and a blocking cavity, the biopsy cavity and the main body part constitute the main cavity 12, which is used for the biopsy needle 4 to puncture and sample the target tissue; the sponge cavity and the blocking cavity are the branch cavity 13, the distal ends of the two cavities communicate with the biopsy cavity, the sponge cavity is used for the hemostatic filler and the pusher 3 to block the puncture channel, and the blocking cavity is used for the blocking wire assembly 2 to stop bleeding of the puncture channel.

[0052] In order to facilitate the operations of biopsy, hemostasis and blocking, etc., the catheter seat 11 is provided with three sliding grooves corresponding to and matching the sponge cavity, the biopsy cavity and the blocking cavity, and the depth of the biopsy needle 4, the pusher 3 and the blocking wire assembly 2 into the target tissue can be controlled through the sliding grooves. Further, the biopsy cavity at the distal end of the sponge cavity and the blocking cavity has a hemostatic valve 14. The hemostatic valve 14 can refer to the prior art, as a preferred example, such as Figure 11As shown, it is a cross valve.

[0053] Referring to Figure 9 and Figure 10 , the biopsy needle 4 comprises a biopsy needle body 41 and a biopsy needle seat 42 connected at the proximal end of the biopsy needle body 41. The biopsy needle body 41 can be inserted into the main cavity 12 to puncture and sample the target tissue, and its specific structure is not particularly limited and can refer to the prior art. The operator controls the biopsy needle body 41 to slide distally or proximally by operating the biopsy needle seat 42.

[0054] Referring to Figures 3 to 6 , the occlusion wire assembly 2 comprises an occlusion wire 21 and an occlusion wire seat 212 connected at the proximal end of the occlusion wire 21. The distal end of the occlusion wire 21 has a first shape and a second shape in response to different temperatures, the first shape is a straight line and the maximum diameter is smaller than the inner diameter of the puncture channel, which facilitates entry into the puncture cavity, even if the puncture channel has a smaller inner diameter, the straight line-shaped occlusion wire 21 is easy to enter; the maximum outer diameter of the second shape is greater than or equal to the inner diameter of the puncture channel and it has a passage 213 allowing the hemostatic filler to enter, thereby extruding the blood vessels on the inner wall of the puncture channel to make them coagulate, preventing subsequent hemostatic fillers from entering the puncture channel and causing ectopic embolism in the blood vessels on the inner wall of the puncture channel, and after hemostasis, the passage 213 allows the hemostatic filler cavity to enter, thereby achieving occlusion of the puncture channel. Generally, the distal end of the occlusion wire 21 changes to the second shape in response to the temperature of the puncture channel (i.e. the body temperature of the human body), and preferably changes to the first shape in response to a temperature lower than the body temperature of the human body.

[0055] Further, the second shape is preferably helical. The helical occlusion wire 21 has better hemostatic effect and is easy to pull out. Specifically, the second shape has a plurality of helical unit rings 211 connected in sequence, and the diameter of each helical unit ring 211 is equal so that the second shape is a helical column, or the diameter of the helical unit ring 211 gradually increases from bottom to top so that the second shape is a helical tower.

[0056] In order to avoid unnecessary damage caused by friction between the occlusion wire 21 and the puncture channel and to better stop bleeding, the outer wall of the distal end of the occlusion wire 21 has an anticoagulant coating and / or a hydrophilic coating (not shown in the figure).

[0057] The material of the occlusion wire 21 is preferably a memory metal, such as nickel-titanium alloy, etc.

[0058] In this embodiment, the occlusion wire assembly 2 further comprises an occlusion tube 22 and an occlusion tube seat 23 connected at the proximal end of the occlusion tube 22, and the occlusion wire 21 is movably arranged in the occlusion tube 22 and is controlled to move by the occlusion wire seat 212.

[0059] The hemostatic filling is a gelatin sponge in the form of a column or a particle. The hemostatic filling in the prior art is mostly in the form of a column, which is not suitable for a small-diameter puncture channel. Small particles of the gelatin sponge may enter the puncture channel, and the design of the occlusion wire 21 can pre-hemostasis of the puncture channel, so that the small particles of the gelatin sponge can not enter the puncture channel, and thus the gelatin sponge in the form of a particle can be used, and the application range is wider.

[0060] Referring to Figure 7 and Figure 8 The pusher 3 includes a push rod 31 and a push rod seat 32 connected to the proximal end of the push rod 31, and is used for pushing the hemostatic filling into the target position. The material of the push rod 31 is preferably a high polymer material or a metal material with a certain deformation capacity, and the length thereof can be designed according to requirements.

[0061] Working principle:

[0062] The biopsy needle 4 is combined with the catheter 1, and then puncture work is performed, so that the biopsy needle body 41 slides along the extension direction of the main lumen 12 to the distal end, enters the target tissue, performs puncture and sampling, and then is withdrawn, thereby completing the biopsy sampling work.

[0063] The occlusion wire assembly 2 enters from the occlusion cavity, the occlusion wire seat 212 is operated to make the distal end of the occlusion wire 21 enter the puncture channel, the distal end of the occlusion wire 21 is excited by temperature, and is switched to the second shape, thereby performing hemostasis on the puncture channel. After the hemostasis is completed, the hemostatic filling is placed in the sponge cavity, and then the hemostatic filling is pushed into the puncture channel by the pusher 3, the hemostatic filling is inflated, and after solidification, the occlusion wire seat 212 is pulled towards the proximal end, so that the occlusion wire 21 is withdrawn, and finally the whole is withdrawn, thereby performing hemostasis on the human skin bleeding.

[0064] The above embodiments are only for illustrating the technical concept and characteristics of the present application, the purpose is to enable persons skilled in the art to understand the content of the present application and implement it, and cannot limit the protection scope of the present application. Any equivalent changes or modifications made according to the spirit and essence of the present application shall be covered within the protection scope of the present application.

Claims

1. A hemostatic component for stopping bleeding in the puncture tract after biopsy, characterized in that, include: A catheter (1) having a through-cavity; The occlusion wire (21) is movably disposed within the cavity, and its distal end has a first shape and a second shape responsive to different temperatures. The first shape is straight and has a maximum diameter smaller than the inner diameter of the puncture channel. The second shape has a maximum outer diameter greater than or equal to the inner diameter of the puncture channel and has a channel (213) that allows hemostatic filler to enter.

2. The hemostatic assembly for hemostasis of the puncture tract after biopsy puncture according to claim 1, characterized in that, The second shape is spiral.

3. The hemostatic assembly for hemostasis of the puncture tract after biopsy puncture according to claim 2, characterized in that, The second shape has a plurality of sequentially connected spiral unit coils (211), each spiral unit coil (211) having an equal diameter, making the second shape a spiral column.

4. The hemostatic assembly for hemostasis of the puncture tract after biopsy puncture according to claim 2, characterized in that, The second shape has multiple spiral unit coils (211) connected in sequence, and the diameter of the spiral unit coils (211) gradually increases from bottom to top, making the second shape a spiral tower shape.

5. The hemostatic assembly for hemostasis of the puncture tract after biopsy puncture according to claim 1, characterized in that, The outer wall of the distal end of the sealing wire (21) has an anti-coating coating and / or a hydrophilic coating.

6. The hemostatic assembly for hemostasis of the puncture tract after biopsy puncture according to claim 1, characterized in that, The hemostatic assembly also includes a plugging tube (22) sleeved on the outside of the plugging wire (21) and a plugging wire seat (212) installed on the proximal end of the plugging tube (22), wherein the plugging wire (21) is connected to the plugging wire seat (212).

7. The hemostatic assembly for hemostasis of the puncture tract after biopsy puncture according to claim 1, characterized in that, The hemostatic assembly further includes a hemostatic filler and a pusher (3). The hemostatic filler is in a filled state and is inserted into the cavity. The pusher (3) is used to push the hemostatic filler out of the cavity and into the puncture channel.

8. The hemostatic assembly for hemostasis of the puncture tract after biopsy puncture according to claim 7, characterized in that, The hemostatic filler is a gelatin sponge; and / or The hemostatic filler is in the form of strips or granules.

9. The hemostatic assembly for hemostasis of the puncture tract after biopsy puncture according to claim 7, characterized in that, The cavity includes a main cavity (12) and a branch cavity (13) connected to the main cavity (12). There are one or more branch cavities (13). The hemostatic filler and the sealing wire (21) are optionally disposed in the main cavity (12) or the branch cavity (13).

10. A biopsy needle kit, characterized in that, Includes the hemostatic component as described in any one of claims 1 to 9.

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