Rotary cutter myocardial biopsy forceps

Abstract

The application relates to a rotary cutting type myocardial biopsy forceps, which comprises a sleeve assembly, a catheter and a handle assembly, the distal end of the handle assembly is connected with the proximal end of the catheter, and the distal end of the catheter is connected with the sleeve assembly; the sleeve assembly comprises a sleeve body, the proximal end of the sleeve body is connected with the catheter, the distal end of the sleeve body is provided with an open port, the inside of the sleeve body is slidably provided with a rotary cutting knife, the inside of the catheter is provided with a first driving member, the handle assembly is drivingly connected with the rotary cutting knife through the first driving member, so as to drive the rotary cutting knife to extend out of the sleeve body and cut myocardial tissue; the distal end of the sleeve body is movably provided with a closing assembly, the inside of the catheter is provided with a second driving member, the handle assembly is drivingly connected with the closing assembly through the second driving member, so as to control the closing assembly to selectively open or close the open port at the distal end of the sleeve body. The rotary cutting type myocardial biopsy forceps can accurately control the sampling depth, and the open port at the distal end of the sleeve body can be closed after sampling, so that myocardial cells are prevented from falling off.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, and particularly relates to a rotary cutting type myocardial biopsy forceps. BACKGROUND

[0002] Endomyocardial biopsy is an important technology for accurately diagnosing myocarditis, cardiomyopathy and other heart diseases by using a catheter type vascular forceps to reach the right ventricle or left ventricle through the body cavity (such as blood vessels) to clamp endomyocardial tissue. At present, the standardized histopathology and immunohistochemical diagnostic criteria combined with endomyocardial biopsy (EMB) are the gold standard for diagnosing myocarditis and other related myocardial diseases.

[0003] Specifically, when performing endomyocardial biopsy using a myocardial biopsy forceps, a path from outside the body to the blood vessel is first constructed by means of vascular puncture, and then the myocardial biopsy forceps is sent into the blood vessel lumen from outside the body, and reaches the endocardial surface of the right ventricle or left ventricle through the blood vessel. During this process, X-ray fluoroscopy is used to observe the position of the distal end of the myocardial biopsy forceps (i.e. the end farthest from the operator, also known as the clamping end of the myocardial biopsy forceps) in real time. When the myocardial biopsy forceps reaches the area to be biopsied in the right ventricle or left ventricle, the endomyocardial tissue can be clamped, and then the biopsy forceps is removed from the blood vessel, thereby completing the entire biopsy operation.

[0004] Chinese patent document CN117179829A discloses a myocardial biopsy forceps, which comprises a biopsy forceps body, the biopsy forceps body comprising a catheter, a forceps head and a handle, the forceps head being arranged at the first end of the catheter, and the handle being arranged at the second end of the catheter, and the forceps head being connected by a control line. The forceps head comprises a coupled first clamping arm and a second clamping arm, and the first clamping arm and the second clamping arm can be opened and closed. When sampling, the forceps head is first opened so that the first clamping arm and the second clamping arm are opened at a certain angle. When the first clamping arm and the second clamping arm are closed, the myocardial tissue to be detected can be clamped. Then the biopsy forceps is withdrawn, and the tissue to be detected is transported to the outside of the body for detection. The tail part of the first clamping arm and the second clamping arm is provided with a space for accommodating a sensor.

[0005] The myocardial biopsy forceps has the following disadvantages and deficiencies: (1) the torn myocardial tissue forms a wound, which is easy to cause thromboembolism; (2) the traditional biopsy forceps cannot accurately control the cutting depth, which may cause the technical defects of insufficient sampling or damage to the deep structure; (3) the head end of the biopsy forceps is designed as a metal clamp, which is hard in material. The biopsy forceps enters the blood vessel and heart cavity in a closed state. If the clamp is accidentally opened before sampling, it is easy to cause iatrogenic damage, such as damage to the blood vessel, valve leaflet or chordae tendineae and other important tissues. If the clamp is accidentally opened after sampling, the torn tissue is easy to fall off and cause the risk of embolism.

[0006] Therefore, it is urgent to provide a rotary cutting type myocardial biopsy forceps with small wound and without causing thromboembolism. SUMMARY

[0007] (1) Technical problems to be solved

[0008] In view of the above-mentioned defects and shortcomings of the prior art, the present application provides a rotary cutting type myocardial biopsy forceps, which solves the technical problem of the existing myocardial biopsy forceps that the torn myocardial tissue forms a wound and easily causes thromboembolism.

[0009] (2) Technical solutions

[0010] In order to achieve the above-mentioned purpose, the main technical solutions adopted by the present application include:

[0011] The present application provides a rotary cutting type myocardial biopsy forceps, which comprises a sleeve assembly, a catheter, a handle assembly and a rotary cutting knife located inside the sleeve assembly. The distal end of the handle assembly is connected to the proximal end of the catheter, and the distal end of the catheter is connected to the sleeve assembly.

[0012] The sleeve assembly comprises a sleeve body and a closing assembly arranged at the open end of the sleeve body. The proximal end of the sleeve body is connected to the catheter. The rotary cutting knife is slidably arranged inside the sleeve body.

[0013] The inside of the catheter is provided with a first driving member. The handle assembly is drivingly connected to the rotary cutting knife through the first driving member, so as to drive the rotary cutting knife to extend out of the sleeve body and cut the myocardial tissue.

[0014] The inside of the catheter is provided with a second driving member. The handle assembly is drivingly connected to the closing assembly through the second driving member, so as to selectively open or close the open end of the sleeve body.

[0015] Optionally, the sleeve body comprises an inner cylinder and an outer cylinder arranged around the inner cylinder.

[0016] The proximal end surface of the outer cylinder extends radially to connect the proximal end surface of the inner cylinder. The distal end of the catheter communicates with the proximal end of the inner cylinder. The rotary cutting knife is accommodated in the inner cylinder. An annular space is formed between the outer wall surface of the inner cylinder and the inner wall surface of the outer cylinder. A part of the closing assembly is accommodated in the annular space. Another part of the closing assembly can selectively open or close the distal end of the inner cylinder.

[0017] Optionally, the closing assembly comprises a first pipe segment and a second pipe segment.

[0018] The distal end of the first pipe segment is connected to the proximal end of the second pipe segment. The second pipe segment is divided into at least two fan ring structures in the circumferential direction. Each fan ring structure is provided with a fan-shaped closing forceps head at the distal end.

[0019] The second tube segment is made of a shape memory alloy material and has an initial shape and a changed shape. In the initial shape, the distal end of the second tube segment expands radially outward, thereby driving the closing pincers to open the distal end of the inner cylinder body.

[0020] The second driving member pulls the second tube segment into the sleeve body, and the second tube segment is limited by the outer cylinder body and is switched from the initial shape to the changed shape. In the changed shape, the distal end of the second tube segment contracts radially inward, thereby driving all the closing pincers to combine to form a circular structure to block the distal end of the inner cylinder body.

[0021] Optionally, when the distal end of the second tube segment contracts radially inward, each closing pincers can press the wound to close the wound.

[0022] Optionally, the handle assembly comprises a handle body and a closing sleeve.

[0023] The handle body is in communication with the proximal end of the catheter, and the closing sleeve is peripherally sleeved on the handle body. The second driving member is a traction wire, one end of the traction wire is in communication with the closing sleeve, and the other end of the traction wire is connected with the first tube segment to drive the closing assembly to move towards the proximal side and switch from the initial shape to the changed shape.

[0024] Optionally, a compression spring is arranged in the annular space inside the sleeve body, and the compression spring is used to drive the closing assembly to move towards the distal side and switch from the changed shape to the initial shape.

[0025] Optionally, the handle assembly further comprises a knurled high head screw.

[0026] The closing sleeve is provided with a threaded hole, the handle body is provided with a positioning hole, the knurled high head screw is screwed with the threaded hole on the closing sleeve, and the end of the knurled high head screw can be selectively inserted into the positioning hole on the handle body to axially position the closing sleeve.

[0027] Optionally, the handle assembly further comprises a push-pull ring.

[0028] The first driving member is a transmission wire, the push-pull ring is connected with one end of the transmission wire, and the other end of the transmission wire is connected with the rotary cutter.

[0029] Optionally, the rotary cutter is a hollow tubular cutter in a circular or polygonal shape.

[0030] Optionally, the outer surfaces of the sleeve body, the rotary cutter and the closing assembly are coated with a super-smooth coating.

[0031] (Three) beneficial effects

[0032] The beneficial effects of the present application are: the rotary cutting type myocardial biopsy forceps of the present application, including a sleeve assembly, a catheter, a handle assembly and a rotary cutter located inside the sleeve assembly, the distal end of the handle assembly is connected to the proximal end of the catheter, and the distal end of the catheter is connected to the sleeve assembly; the sleeve assembly includes a sleeve body and a closing assembly arranged at the open end of the sleeve body, and the proximal end of the sleeve body is connected to the catheter; the rotary cutter is slidably arranged inside the sleeve body; the inside of the catheter is provided with a first driving member, and the handle assembly is drivingly connected with the rotary cutter through the first driving member, so as to drive the rotary cutter to extend out of the sleeve body and cut the myocardial tissue; the inside of the catheter is provided with a second driving member, and the handle assembly is drivingly connected with the closing assembly through the second driving member, so as to control the closing assembly to selectively open or close the open end of the distal end of the sleeve body. Compared with the existing myocardial biopsy forceps, the rotary cutting type myocardial biopsy forceps of the present application has the following advantages: first, the depth of myocardial biopsy by the rotary cutter can be accurately controlled; second, the sleeve body is installed on the outside of the rotary cutter, which can avoid iatrogenic injury caused by the rotary cutter during operation; third, the distal end of the sleeve body can be closed after sampling through the closing assembly, which can avoid the myocardial tissue from falling off, and further improve the safety and effectiveness of the operation. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 It is a front view schematic diagram of embodiment 1 of the rotary cutting type myocardial biopsy forceps of the present application.

[0034] Figure 2 It is a front view schematic diagram of embodiment 1 of the rotary cutting type myocardial biopsy forceps of the present application. Figure 1

[0035] Figure 3 It is a front view schematic diagram of the closing assembly of the rotary cutting type myocardial biopsy forceps in the variation state. Figure 2

[0036] Figure 4 It is a side view schematic diagram of the closing assembly in the variation state. Figure 3

[0037] Figure 5 It is a front view schematic diagram of the closing assembly of the rotary cutting type myocardial biopsy forceps in the initial state. Figure 2

[0038] Figure 6 It is a front view schematic diagram of the handle assembly of the rotary cutting type myocardial biopsy forceps in the initial state. Figure 1

[0039] Figure 7 It is a side view schematic diagram of the closing assembly of embodiment 2 of the rotary cutting type myocardial biopsy forceps of the present application.

[0040]

Explanation of reference signs

[0041] 1: Sleeve assembly; 2: Catheter; 3: Handle assembly; 31: Handle body; 32: Push-pull ring; 33: Operating ring; 34: Closed sleeve; 35: Knurled high-head screw; 4: Sleeve body; 41: Inner cylinder; 42: Outer cylinder; 43: Compression spring; 5: Peeler; 6: Closing assembly; 61: First pipe section; 62: Second pipe section; 63: Closed pliers head; 7: Transmission wire; 8: Traction wire. DETAILED DESCRIPTION

[0042] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0043] Example 1:

[0044] Reference Figure 1 and Figure 2 This embodiment provides a rotary myocardial biopsy forceps, comprising a sleeve assembly 1, a catheter 2, a handle assembly 3, and a rotary cutter 5 located inside the sleeve assembly 1. The distal end of the handle assembly 3 is connected to the proximal end of the catheter 2, and the distal end of the catheter 2 is connected to the sleeve assembly 1.

[0045] The sleeve assembly 1 includes a sleeve body 4 and a closing assembly 6 disposed at the distal open end of the sleeve body 4 . The proximal end of the sleeve body 4 is connected to the catheter 2 . The rotary cutter 5 is slidably disposed inside the sleeve body 4 .

[0046] A first driving member is provided inside the catheter 2 , and the handle assembly 3 is connected to the rotary cutter 5 via the first driving member to drive the rotary cutter 5 to extend out of the sleeve body 4 and rotary cut the myocardial tissue.

[0047] A second driving component is provided inside the catheter 2 , and the handle assembly 3 is drivenly connected to the closing assembly 6 via the second driving component to control the closing assembly 6 to selectively open or close the opening at the distal end of the sleeve body 4 .

[0048] The rotary myocardial biopsy forceps of this embodiment offer the following three advantages: First, the sampling depth can be precisely controlled using the rotary blade 5 during myocardial biopsy. Second, a sleeve body 4 is mounted on the outer side of the rotary blade 5, which prevents iatrogenic damage caused by puncture during operation. Third, the distal end of the sleeve body 4 can be closed by a closure assembly 6 after sampling, preventing myocardial tissue removed by the rotary blade 5 from falling off and potentially causing embolism, further improving the safety and effectiveness of the procedure.

[0049] Preferably, the sleeve body 4 of the present embodiment comprises an inner cylinder 41 and an outer cylinder 42 sleeved on the periphery of the inner cylinder 41. The proximal end surface of the outer cylinder 42 extends radially to connect the proximal end surface of the inner cylinder 41, the distal end of the catheter 2 communicates with the proximal end of the inner cylinder 41, the inner cylinder 41 accommodates the rotary cutter 5, and the annular space is formed between the outer wall surface of the inner cylinder 41 and the inner wall surface of the outer cylinder 42, and a part of the closure assembly 6 is accommodated in the annular space. Another part of the closure assembly 6 can selectively open or close the distal end of the inner cylinder 41.

[0050] In combination Figure 3 , Figure 4 and Figure 5 , the closure assembly 6 of the present embodiment comprises a first pipe segment 61 and a second pipe segment 62. The distal end of the first pipe segment 61 connects the proximal end of the second pipe segment 62, and the second pipe segment 62 is divided into at least two fan ring structures in the circumferential direction, and each fan ring structure is provided with a fan-shaped closure jaw 63 at the distal end. The second pipe segment 62 is made of a shape memory alloy material and has an initial shape and a changed shape. In the initial shape, the distal end of the second pipe segment 62 expands radially outward, thereby driving the closure jaw 63 to open the distal end of the inner cylinder 41. The second driving member pulls the second pipe segment 62 into the inside of the sleeve body 4, and the second pipe segment 62 is limited by the outer cylinder 42 and is switched from the initial shape to the changed shape. In the changed shape, the distal end of the second pipe segment 62 contracts radially inward, driving all the closure jaws 63 to combine to form a circular structure to block the distal end of the inner cylinder 41.

[0051] Specifically, the second pipe segment 62 of the present embodiment is divided into two fan ring structures in the circumferential direction, and each fan ring structure is provided with a semicircular closure jaw 63 at the distal end.

[0052] Preferably, when the distal end of the second pipe segment 62 of the present embodiment contracts radially inward, each closure jaw 63 can drive the wound to be extruded to close the wound, thereby significantly reducing the risk of thromboembolism.

[0053] Referring to Figure 6 , the handle assembly 3 of the present embodiment comprises a handle body 31 and a closure sleeve 34. The handle body 31 communicates with the proximal end of the catheter 2, and the closure sleeve 34 is sleeved on the periphery of the handle body 31. The second driving member is a pull wire 8, one end of the pull wire 8 communicates with the closure sleeve 34, and the other end of the pull wire 8 is connected with the first pipe segment 61 to drive the closure assembly 6 to move towards the proximal side, switch from the initial shape to the changed shape, thereby controlling the closure assembly 6 to close the distal end of the inner cylinder 41.

[0054] Preferably, a compression spring 43 is arranged in the annular space inside the sleeve body 4, which is used to drive the closure assembly 6 to move distally, from the changed shape to the initial shape, thereby controlling the distal end of the inner cylinder 41 opened by the closure assembly 6.

[0055] Preferably, the handle assembly 3 further comprises a knurled thumb screw 35. The closure sleeve 34 is provided with a threaded hole, and the handle body 31 is provided with a positioning hole. The knurled thumb screw 35 is screwed with the threaded hole of the closure sleeve 34, and the end of the knurled thumb screw 35 can be selectively inserted into the positioning hole of the handle body 31 to axially position the closure sleeve 34. It should be noted that the knurled thumb screw 35 can also be replaced by a positioning pin.

[0056] Preferably, the handle assembly 3 further comprises a push-pull ring 32. The first driving member is a transmission wire 7, and the push-pull ring 32 is connected to one end of the transmission wire 7, and the other end of the transmission wire 7 is connected to the rotary cutter 5.

[0057] Preferably, the rotary cutter 5 is a hollow tubular cutter with a circular shape, or a hollow tubular cutter with a polygonal shape. For example, the rotary cutter 5 can be a hollow tubular cutter with a regular pentagon, a regular hexagon, or a regular heptagon.

[0058] Preferably, the proximal end of the handle body 31 is provided with an operating ring 33. The operating ring 33 is arranged to facilitate the operator to hold it.

[0059] Preferably, the outer surfaces of the sleeve body 4, the rotary cutter 5, and the closure assembly 6 are coated with a super-slip coating. Specifically, the super-slip coating is a polyvinylpyrrolidone super-slip coating with a thickness of 5 microns. The super-slip coating not only reduces the friction when the instrument moves in the blood vessel, but also has good biocompatibility, reducing the risk of thrombosis and infection.

[0060] The use process of the rotary cutter myocardial biopsy forceps of the embodiment is as follows: first, the sleeve assembly 1 is sent into the desired biopsy cavity through peripheral vascular puncture; second, the biopsy area is determined, the closure sleeve 34 on the handle body 31 is moved distally to reduce the pulling force on the sleeve body 4, the compression spring 43 pushes the sleeve body 4 to move distally, from the changed shape to the initial shape, thereby controlling the distal end of the inner cylinder 41 opened by the closure assembly 6; third, the rotary cutter 5 is made to pass out of the distal end of the sleeve body 4 through the push-pull ring 32 to rotary cut and sample the myocardial tissue; after the rotary cutting is completed, the rotary cutter 5 is made to retreat into the sleeve body 4 through the push-pull ring 32. Finally, the sleeve body 4 is pulled proximally through the closure sleeve 34 on the handle body 31, from the initial shape to the changed shape, thereby controlling the distal end of the inner cylinder 41 closed by the closure assembly 6; then, the sleeve assembly 1 and the catheter 2 are slowly withdrawn from the heart cavity, and the myocardial tissue sample is retained in the sleeve body 4.

[0061] Embodiment 2

[0062] With reference to Figure 7 , this embodiment provides another rotary biopsy forceps, different from the embodiment 1 is that the second tube segment 62 of the closure assembly 6 of this embodiment is divided into three fan ring structures in the circumferential direction, and each fan ring structure is provided with a fan-shaped closure forceps head 63 at the distal end.

[0063] In addition, the number of traction wires 8 of the rotary biopsy forceps of this embodiment is two or more, so as to improve the fault tolerance and safety of the rotary biopsy forceps, and prevent the traction wire 8 from falling off the closure assembly 6, causing the closure assembly 6 to open unexpectedly.

[0064] The rest is the same as embodiment 1, and will not be repeated here.

[0065] In the description of the present application, it should 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 defined as "first", "second" can be explicitly or implicitly included one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0066] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0067] In the present application, unless otherwise specifically defined and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature is "above", "above" and "above" the second feature, which can be directly above or obliquely above the first feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature is "below", "below" and "below" the second feature, which can be directly below or obliquely below the first feature, or only indicates that the horizontal height of the first feature is lower than that of the second feature.

[0068] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "an embodiment", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are contained in at least one embodiment or example of the present application. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples without contradiction.

[0069] Although the embodiments of the present application have been shown and described above, it is understood that the above-described embodiments are exemplary and are not to be construed as limiting the present application, and the person skilled in the art can modify, modify, replace and modify the above-described embodiments within the scope of the present application.

Claims

1. A rotary myocardial biopsy forceps, characterized in that: The invention comprises a sleeve assembly (1), a catheter (2), a handle assembly (3) and a rotary cutter (5) located inside the sleeve assembly (1), wherein the distal end of the handle assembly (3) is connected to the proximal end of the catheter (2), and the distal end of the catheter (2) is connected to the sleeve assembly (1); The sleeve assembly (1) comprises a sleeve body (4) and a sealing assembly (6) arranged at the distal open end of the sleeve body (4); the proximal end of the sleeve body (4) is connected to the catheter (2); the rotary cutter (5) is slidably arranged inside the sleeve body (4); A first driving member is provided inside the catheter (2), and the handle assembly (3) forms a driving connection with the rotary cutter (5) through the first driving member, so as to drive the rotary cutter (5) to extend out of the sleeve body (4) and rotary cut the myocardial tissue; A second driving component is provided inside the catheter (2), and the handle assembly (3) is connected to the closing assembly (6) through the second driving component to control the closing assembly (6) to open or close the opening at the distal end of the sleeve body (4); The sleeve body (4) comprises an inner cylinder (41) and an outer cylinder (42) sleeved on the periphery of the inner cylinder (41); The proximal end surface of the outer cylinder (42) extends radially to connect with the proximal end surface of the inner cylinder (41), the distal end of the conduit (2) is connected to the proximal end of the inner cylinder (41), the inner cylinder (41) accommodates the rotary cutter (5), the outer wall surface of the inner cylinder (41) and the inner wall surface of the outer cylinder (42) enclose an annular space, a part of the sealing component (6) is accommodated in the annular space, and the other part of the sealing component (6) can open or close the distal end of the inner cylinder (41); The closure assembly (6) includes a first pipe section (61) and a second pipe section (62); The distal end of the first pipe section (61) is connected to the proximal end of the second pipe section (62), and the second pipe section (62) is divided into at least two fan-shaped ring structures along the circumferential direction, and a fan-shaped closed clamp head (63) is provided at the distal end of each fan-shaped ring structure; The second tube section (62) is made of a shape memory alloy and has an initial shape and a variable shape. In the initial shape, the distal end of the second tube section (62) expands radially outward, thereby driving the closing clamp head (63) to open the distal end of the inner cylinder (41); The second driving member pulls the second pipe section (62) into the interior of the sleeve body (4). The second pipe section (62) is restricted by the outer cylinder (42) and switches from an initial shape to a changed shape. In the changed shape, the distal end of the second pipe section (62) contracts radially inward, driving the closing clamp head (63) to block the distal end of the inner cylinder (41). The handle assembly (3) comprises a handle body (31) and a closed sliding sleeve (34); The handle body (31) is connected to the proximal end of the catheter (2), and a closed sliding sleeve (34) is provided on the periphery of the handle body (31). The second driving member is a traction wire (8), one end of the traction wire (8) is connected to the closed sliding sleeve (34), and the other end of the traction wire (8) is connected to the first pipe section (61), so as to drive the closed component (6) to move toward the proximal side and switch from the initial form to the changed form. The handle assembly (3) further comprises a knurled high head screw (35); A threaded hole is provided on the closed sleeve (34), and a positioning hole is provided on the handle body (31). The knurled high head screw (35) is screwed into the threaded hole on the closed sleeve (34), and the end of the knurled high head screw (35) can be plugged into the positioning hole on the handle body (31) to axially position the closed sleeve (34).

2. The rotary myocardial biopsy forceps according to claim 1, wherein: When the distal end of the second tube section (62) contracts radially inward, it can drive each sealing forceps head (63) to squeeze the wound surface to seal the wound surface.

3. The rotary myocardial biopsy forceps according to claim 1, wherein: A compression spring (43) is provided in the annular space inside the sleeve body (4), and the compression spring (43) is used to drive the sealing component (6) to move toward the distal side, switching from the changed form to the initial form.

4. The rotary myocardial biopsy forceps according to claim 1, wherein: The handle assembly (3) further includes a push-pull ring (32); The first driving member is a transmission wire (7), the push-pull ring (32) is connected to one end of the transmission wire (7), and the other end of the transmission wire (7) is connected to the rotary cutter (5).

5. The rotary myocardial biopsy forceps according to claim 1, characterized in that: The rotary cutter (5) is a circular or polygonal hollow tubular cutter.

6. The rotary myocardial biopsy forceps according to any one of claims 1 to 5, characterized in that: The outer surfaces of the sleeve body (4), the rotary cutter (5) and the closing component (6) are coated with a super-slip coating.

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