A puncture device

Abstract

The present invention discloses a puncture device, aiming to provide a puncture device with a simple structure and convenient operation, which can stop bleeding on damaged tissues. The technical scheme is as follows: a puncture device comprises a puncture sleeve, a puncture core passing through the puncture sleeve, a puncture portion is arranged at one end of the puncture core and extends to the outside of the puncture sleeve, an extrusion portion which can be expanded outward is arranged at one end of the puncture sleeve close to the puncture portion, the extrusion portion comprises at least two blades, one end of the blade is movably connected to the puncture sleeve, and the blade and the puncture core are connected via a connecting assembly; when the connecting assembly is in a first preset state, the blade and the puncture core are connected; when the connecting assembly is in a second preset state, the blade and the puncture core are separated, and the blade is expanded outward, belonging to the technical field of medical devices.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical devices, and more specifically, relates to a puncture device. Background Art

[0002] The trocar is a surgical instrument that, in conjunction with minimally invasive equipment, provides an instrument channel for minimally invasive abdominal and pelvic surgery.

[0003] The invention patent publication number is CN204581447U, which discloses a laparoscopic anti-dislocation hemostatic puncture device, including a puncture cone and a puncture cannula; the puncture cannula is composed of a puncture tube and a channel body with a supporting channel, and is an integrally formed structure; a flushing tube and an inflation / liquid port are provided on the outside of the channel body with the supporting channel, and the flushing tube is connected to the supporting channel; a balloon is provided on the outer periphery of the puncture tube; an inflation / liquid pipeline is built into the wall of the puncture cannula, one end of the inflation / liquid pipeline is connected to the inflation / liquid port, and the other end is connected to the balloon.

[0004] In the above-mentioned scheme of a laparoscopic anti-dislocation hemostatic puncture device, after the puncture device is inserted into the abdominal cavity, gas or liquid is filled into the balloon through the inflation / liquid port to expand the balloon, thereby preventing the puncture device from shifting. At the same time, it can also play a certain role in compression and hemostasis.

[0005] The defects of the prior art are that the hemostasis of punctured damaged tissue is achieved by balloon expansion, and the structure is complex. During operation, the balloon needs to be filled with gas or liquid, which makes the operation complicated.

[0006] Therefore, the technical problem to be solved by the present application is: how to provide a puncture device which has a simple structure, is easy to operate and can stop bleeding on damaged tissues. Summary of the invention

[0007] The main purpose of the present invention is to provide a puncture device, which aims to provide a puncture device with a simple structure and convenient operation and can stop bleeding on damaged tissue.

[0008] According to a first aspect of the present invention, there is provided a puncture device, comprising a puncture sleeve, a puncture core passing through the puncture sleeve, one end of the puncture core is provided with a puncture portion and extends outside the puncture sleeve, one end of the puncture sleeve close to the puncture portion is provided with an outwardly expandable extrusion portion, the extrusion portion comprises at least two blades, one end of the blade is movably connected to the puncture sleeve, and the blade and the puncture core are connected via a connecting assembly;

[0009] When the connection assembly is in a first preset state, the blade is connected to the puncture core;

[0010] When the connection assembly is in the second preset state, the blades are separated from the puncture core, and the blades are spread outward.

[0011] In a specific embodiment of the present invention, the connection assembly includes a connection member and a connection matching member, and the connection member and the connection matching member form a snap-fit ​​structure.

[0012] In a specific embodiment of the present invention, the connecting member is a positioning member, the connecting fitting member is a fastener, the connecting member is arranged on the blade, and the connecting fitting member is arranged on the puncture core.

[0013] In a specific embodiment of the present invention, a plurality of memory steel wires are connected between the blade and the puncture sleeve;

[0014] When the connecting assembly is in the second preset state, the memory wire is in a memory state to enable the blades to unfold.

[0015] In a specific embodiment of the present invention, after the blades are unfolded, the angle between the blades and the puncture cannula is 90° to 120°.

[0016] In a specific embodiment of the present invention, the outer wall of the puncture sleeve is provided with a fixing block which is movable and fixable along the length direction of the puncture sleeve. When the puncture device is in use, the fixing block is pressed against the outer wall of the abdominal cavity.

[0017] In a specific embodiment of the present invention, the fixing block is a nut, and a thread matching with the nut is provided on the outer wall of the puncture sleeve.

[0018] In a specific embodiment of the present invention, a through hole is provided in the puncture sleeve, the puncture core cooperates with the through hole, and an air inlet interface communicated with the through hole is also provided at one end of the puncture sleeve away from the puncture portion;

[0019] The air inlet interface is provided with a valve;

[0020] A sealing member is provided in the through hole, and an opening is provided on the sealing member for the puncture core to pass through, and the air inlet interface is located between the blade and the sealing member; when the puncture core is separated from the sealing member, the opening is in a tightly closed state, the air inlet interface and the through hole form a ventilation channel, and the gas is output from one end of the through hole away from the sealing member.

[0021] In a specific embodiment of the present invention, the number of the blades is 3, and the length of the blades is 10 mm to 40 mm;

[0022] When the connecting assembly is in a first preset state, the blades form a cylindrical structure.

[0023] One of the above technical solutions of the present invention has at least one of the following advantages or beneficial effects: In the present invention, the extrusion portion includes at least two blades, one end of the blade is movably connected to the puncture sleeve, and the blade and the puncture core are connected by a connecting assembly;

[0024] When the puncture device is not in use, the connection assembly is in a first preset state, and the blade is connected to the puncture core;

[0025] When the puncture device is in use, the connection component is in the first preset state, and the puncture device is inserted into the abdominal cavity through the cortex. When the connection component is converted to the second preset state, the blades and the puncture core are separated, the blades are spread outward, and then the blades are pressed against the inner wall of the abdominal cavity to squeeze the damaged tissue, thereby achieving a hemostatic effect. The structure is simple and the operation is convenient.

[0026] At the same time, after the leaves are unfolded, the trocar can be positioned to prevent the trocar from shifting during use, and the leaves can also avoid blocking the line of sight;

[0027] After the leaves are unfolded, the puncture core is pulled out from the puncture cannula, and the operation is assisted by the puncture cannula. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The present invention is further described below in conjunction with the accompanying drawings and embodiments;

[0029] Figure 1 is a structural diagram of a connection component of the first embodiment of the present invention when it is in a first preset state;

[0030] Figure 2 is a structural diagram of the connection component of the first embodiment of the present invention when it is in a second preset state;

[0031] Figure 3 is a bottom view of the structure of the first embodiment of the present invention when the blades are unfolded;

[0032] Figure 4 is a first structural diagram of a connection assembly according to a first embodiment of the present invention;

[0033] Figure 5 is a second structural diagram of the connection assembly of the first embodiment of the present invention;

[0034] Figure 6 is a third structural diagram of the connection assembly of the first embodiment of the present invention;

[0035] Figure 7 It is a cross-sectional structural diagram of the puncture sleeve and the puncture core of the first embodiment of the present invention when they are matched;

[0036] Figure 8is a cross-sectional structural diagram of a puncture cannula according to a first embodiment of the present invention;

[0037] Fig. 9 It is a structural diagram of pulling out the puncture core according to the first embodiment of the present invention. DETAILED DESCRIPTION

[0038] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions from beginning to end. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0039] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0040] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0041] In the description of the present invention, it should be noted that, unless otherwise clearly stipulated and limited, the term "connection" should be understood in a broad sense. For example, it can be a fixed connection or a movable connection, a detachable connection or a non-detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be internal connection between two elements, indirect connection, or an interactive relationship between two elements.

[0042] The following disclosure provides many different embodiments or examples for implementing different solutions of the present invention.

[0043] Reference Figures 1 to 9As shown, a puncture device comprises a puncture sleeve 1, a puncture core 2 is passed through the puncture sleeve 1, one end of the puncture core 2 is provided with a puncture portion 21 and extends outside the puncture sleeve 1, and the end of the puncture sleeve 1 close to the puncture portion 21 is provided with an outwardly expandable extrusion portion 3, the extrusion portion 3 includes at least two, one end of the blade 31 is movably connected to the puncture sleeve 1, and the blade 31 and the puncture core 2 are connected by a connecting component 4;

[0044] When the connecting assembly 4 is in the first preset state, the blade 31 is connected to the puncture core 2;

[0045] When the connecting assembly 4 is in the second preset state, the blades 31 are separated from the puncture core 2, and the blades 31 are spread outward.

[0046] In practical applications, when the puncture device is not in use, the connection assembly 4 is in a first preset state, and the blade 31 is connected to the puncture core 2;

[0047] refer to Figure 1 , Figure 2 and Fig. 9 When the puncture device is in use, the connecting component 4 is in the first preset state, and the puncture device is inserted into the abdominal cavity through the cortex. When the connecting component 4 is converted to the second preset state, the blade 31 and the puncture core 2 are separated, and the blade 31 is unfolded outward, and then the blade 31 is pressed against the inner wall of the abdominal cavity to squeeze the damaged tissue, thereby achieving the effect of hemostasis. The structure is simple and the operation is convenient;

[0048] At the same time, after the leaves 31 are unfolded, the trocar can be positioned to prevent the trocar from shifting during use, and the leaves 31 can also avoid blocking the line of sight;

[0049] After the blades 31 are unfolded, the puncture core 2 is pulled out from the puncture cannula 1, and the puncture cannula 1 is used to assist the operation.

[0050] As a specific implementation of this embodiment, the puncture portion 21 is conical, and a plurality of evenly arranged puncture rods for assisting puncture are also provided on the puncture portion 21, which extend from the large end of the puncture portion to the small end of the puncture portion;

[0051] The puncture portion 21 may also be an inclined cutting surface, such as a puncture needle structure; or may be composed of two cutting surfaces, the ends of which are connected to each other;

[0052] This embodiment does not limit the structure of the puncture portion 21 .

[0053] In this embodiment, the connection assembly 4 includes a connection member 41 and a connection fitting member 42 , and the connection member 41 and the connection fitting member 42 form a snap-fit ​​structure.

[0054] As a specific implementation of this embodiment, refer to Figures 4 to 6 , the connecting member 41 is a positioning member, the connecting fitting member 42 is a fastener, the connecting member 41 is arranged on the blade 31, and the connecting fitting member 42 is arranged on the puncture core 2;

[0055] Specifically, the puncture core 2 is provided with an annular groove 22 or a groove adapted to the blade 31, and the connecting fitting 42 is arranged in the annular groove 22 or the groove;

[0056] refer to Figure 4 The connecting fitting 42 may be a block circumferentially arranged in the annular groove 22 or the groove, and a clamping hole is provided in the block; the connecting member 41 is a hook-shaped positioning block, and one side of the hook-shaped positioning block is an arc-shaped that matches the annular groove 22 or the groove, and the conversion between the first preset state and the second preset state of the connecting component 4 is achieved by rotating the puncture core 2;

[0057] When the connecting assembly 4 is in the first preset state, the hook-shaped positioning block passes through the block from the clamping hole; when the first preset state is converted into the second preset state, the puncture core 2 is rotated in the reverse direction to make the hook-shaped positioning block disengage from the clamping block, thereby realizing the separation of the blade 31 from the puncture core 2;

[0058] This embodiment also provides another structural diagram of the connection component 4, referring to Figure 5 , the connecting fitting 42 can also be a baffle covering the annular groove 22 or the top of the groove, and the conversion between the first preset state and the second preset state of the connecting assembly 4 is achieved by rotating the puncture core 2;

[0059] When the connecting assembly 4 is in the first preset state, one end of the hook-shaped positioning block extends to the lower part of the baffle, so that the blade 31 is connected to the puncture core 2; when the first preset state is converted to the second preset state, the puncture core 2 is rotated in the reverse direction, so that the hook-shaped positioning block is separated from the clamping block, thereby realizing the separation of the blade 31 from the puncture core 2;

[0060] This embodiment also provides another structural diagram of the connection component 4, referring to Figure 6 The baffle plate can also be arranged at the upper part of the annular groove 22 or the groove in the vertical direction, the hook-shaped positioning block is arranged vertically upward, and the lower part of the annular groove 22 or the groove can accommodate the entire hook-shaped positioning block, and the conversion between the first preset state and the second preset state of the connecting component 4 is realized by driving the blade 31 and the puncture core 2 to move relative to each other in the vertical direction;

[0061] When the connecting assembly 4 is in the first preset state, one end of the hook-shaped positioning block extends to the lower part of the baffle, so that the blade 31 is connected to the puncture core 2; when the first preset state is converted to the second preset state, the blade 31 and the puncture core 2 are driven to move relative to each other, so that the hook-shaped positioning block moves to the lower part of the annular groove 22 or the groove to break away from the restriction of the baffle, thereby realizing the separation of the blade 31 and the puncture core 2;

[0062] This embodiment does not limit the structure of the connecting component 4.

[0063] As a specific implementation of this embodiment, refer to Figures 1-2 A plurality of memory steel wires 5 are connected between the blade 31 and the puncture sleeve 1. When the blade 31 is separated from the puncture core 2, the memory steel wire 5 is no longer restricted by the buckle structure, thereby restoring the shape in the memory state;

[0064] When the connecting assembly 4 is in the second preset state, the memory wire 5 is in the memory state to enable the blades 31 to unfold;

[0065] Specifically, one end of the memory wire 5 is fixedly connected to the puncture sleeve 1, and the other end is arranged on the blade 31;

[0066] As a preferred embodiment of the present invention, the blade 31 and the puncture sleeve 1 are connected by two memory steel wires 5 to ensure the normal operation thereof. Of course, the present embodiment does not exclude the possibility that the number of the memory steel wires 5 is one or more.

[0067] Preferably, after the blades 31 are unfolded, the angle between the blades 31 and the puncture cannula 1 is 90° to 120°, so that the blades 31 can be pressed against the inner wall of the abdominal cavity after being unfolded.

[0068] Preferably, the outer wall of the puncture sleeve 1 is provided with a fixing block 6 which can be moved and fixed along the length direction of the puncture sleeve 1. When the puncture device is in use, the fixing block 6 is pressed against the outer wall of the abdominal cavity, and cooperates with the blades 31 to squeeze the damaged tissue, further improving the hemostatic effect.

[0069] Specifically, the fixing block 6 is a nut, and a thread 11 cooperating with the nut is provided on the outer wall of the puncture sleeve 1 .

[0070] In this embodiment, a through hole 12 is provided in the puncture sleeve 1, and the puncture core 2 cooperates with the through hole 12. An end of the puncture sleeve 1 away from the puncture portion 21 is also provided with an air inlet interface 13 which is in communication with the through hole 12.

[0071] The air inlet interface 13 is provided with a valve 14;

[0072] One end of the valve 14 is rotatably connected to the air inlet interface 13, and one end of the valve 14 extending into the air inlet interface 13 is provided with a first air passage, and the valve 14 is provided with a conducting hole communicated with the first air passage; the air inlet interface 13 is L-shaped, one end is a plug-in end connected to an external air pipe, and the other end is an air inlet end, and a second air passage extending from the plug-in end to the air inlet end is provided in the air inlet interface 13;

[0073] The valve 14 is provided with one end of the first air passage extending into the air inlet end, and the second air passage is opened and closed by rotating the valve 14 .

[0074] When the valve 14 is in an open state, the conducting hole corresponds to the second air passage of the plug end, so that the second air passage in the plug end, the conducting hole, the first air passage, and the second air passage in the air inlet end are mutually connected;

[0075] When the valve 14 is in a closed state, the conducting hole is staggered with the second air passage of the plug-in end, so that one end of the valve 14 blocks the second air passage.

[0076] The through hole 12 is provided with a seal 15, and the seal 15 is provided with an opening 151 for the puncture core 2 to pass through, and the air inlet interface 13 is located between the blade 31 and the seal 15; when the puncture core 2 is separated from the seal 15, the opening 151 is in a tightly closed state, and the air inlet interface 13 and the through hole 12 form a ventilation channel, and the gas is output from the end of the through hole 12 away from the seal 15;

[0077] Specifically, refer to Figure 7 and Figure 8 The sealing member 15 is a baffle structure made of elastic material. When the puncture core 2 passes through the sealing member 15, the opening 151 is elastically deformed. When the puncture core 2 is separated from the sealing member 15, the sealing member 15 returns to its initial state, and the opening 151 is in a tightly closed state, so that the gas cannot leak from the sealing member 15.

[0078] The air inlet port 13 can also be used for liquid inlet, which is not limited in this embodiment;

[0079] The sealing member 15 is further provided with an elastic sheet 16 disposed in the through hole 12 on one side away from the air inlet interface 13 . The elastic sheet 16 is provided with a hole for the puncture core 2 to pass through. The elastic sheet 16 and the hole can be deformed as the puncture core 2 is inserted or withdrawn.

[0080] In this embodiment, there are three blades 31, and the length of the blade 31 is 10 mm to 40 mm;

[0081] When the connecting assembly 4 is in the first preset state, the blades 31 form a cylindrical structure;

[0082] Specifically, when the blades 31 form a cylindrical structure, the end surface of the cylindrical structure away from the puncture sleeve 1 can be a plane or an inclined surface;

[0083] In this embodiment, when the end surface of the cylindrical structure away from the puncture sleeve 1 is a plane, the length of the blade is preferably 20 mm;

[0084] When the end surface of the cylindrical structure away from the puncture sleeve 1 is an inclined surface, the length of the blade is between 10 mm and 40 mm.

[0085] As a specific implementation of this embodiment, the end surface of the cylindrical structure away from the puncture sleeve 1 is a plane, and a puncture guide inclined surface may also be provided on the plane;

[0086] The end of the puncture sleeve 1 away from the blade 31 may also be provided with a handle for easy operation, which is not limited in this embodiment.

[0087] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A puncture device, comprising a puncture sleeve (1), a puncture core (2) passing through the puncture sleeve (1), one end of the puncture core (2) being provided with a puncture portion (21) extending to the outside of the puncture sleeve (1), characterized in that: An outwardly expanded squeezing portion (3) is provided at one end of the puncture sleeve (1) close to the puncture portion (21), the squeezing portion (3) comprising at least two blades (31), one end of the blades (31) being movably connected to the puncture sleeve (1), and the blades (31) and the puncture core (2) being connected via a connecting assembly (4); When the connection assembly (4) is in a first preset state, the blade (31) and the puncture core (2) are connected; When the connection assembly (4) is in a second preset state, the blade (31) and the puncture core (2) are separated, and the blade (31) is spread outward; The connection assembly (4) comprises a connection piece (41) and a connection matching piece (42), wherein the connection piece (41) and the connection matching piece (42) form a buckle structure; The connecting piece (41) is a positioning piece, the connecting fitting piece (42) is a fastener, the connecting piece (41) is arranged on the blade (31), and the connecting fitting piece (42) is arranged on the puncture core (2); A plurality of memory steel wires (5) are connected between the blade (31) and the puncture sleeve (1); When the connection assembly (4) is in the second preset state, the memory steel wire (5) is in a memory state so that the blades (31) are unfolded.

2. The trocar according to claim 1, characterized in that: After the blade (31) is unfolded, the included angle between the blade (31) and the puncture sleeve (1) is 90° to 120°.

3. The trocar according to claim 1, characterized in that: The outer wall of the puncture sleeve (1) is provided with a fixing block (6) which moves and is fixed along the length direction of the puncture sleeve (1); when the puncture device is in use, the fixing block (6) is pressed against the outer wall of the abdominal cavity.

4. The trocar according to claim 3, characterized in that: The fixing block (6) is a nut, and a thread (11) matching with the nut is provided on the outer wall of the puncture sleeve (1).

5. The trocar according to claim 1, characterized in that: The puncture sleeve (1) is provided with a through hole (12), the puncture core (2) cooperates with the through hole (12), and the end of the puncture sleeve (1) away from the puncture portion (21) is also provided with an air inlet interface (13) which is in communication with the through hole (12); The air inlet interface (13) is provided with a valve (14); A sealing member (15) is provided in the through hole (12), and an opening (151) is provided on the sealing member (15) for the puncture core (2) to pass through, and the air inlet interface (13) is located between the blade (31) and the sealing member (15); when the puncture core (2) is separated from the sealing member (15), the opening (151) is in a tightly closed state, the air inlet interface (13) and the through hole (12) form a ventilation channel, and gas is output from one end of the through hole (12) away from the sealing member (15).

6. The trocar according to any one of claims 1 to 5, characterized in that: There are three blades (31), and the length of the blades (31) is 10 mm to 40 mm; When the connection assembly (4) is in a first preset state, the blades (31) form a cylindrical structure.

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