A visual myocardial biopsy forceps

Abstract

The present invention relates to the field of medical equipment technology, and in particular to a visual myocardial biopsy forceps. It comprises a handle, a connecting tube is fixedly connected to one side of the handle, a fixing ring is fixedly connected to the side of the connecting tube away from the handle, a protective cover is fixedly connected to the side of the fixing ring away from the connecting tube, and a protective film distributed in a ring array is fixedly connected to the side of the protective cover away from the fixing ring. The present invention adopts a method of shielding and protecting the side of the myocardial biopsy forceps located in the patient's body, hiding the clamping part of the myocardial biopsy forceps in a protective shell, and providing a flexible protective shell at the clamping part of the myocardial biopsy forceps, so that the clamping part of the myocardial biopsy forceps will not damage the tricuspid valve when passing through the patient's body, and the clamping part of the myocardial biopsy forceps will not be entangled with the pacing wire when walking in the patient's body, and a miniature camera is installed at the clamping part of the myocardial biopsy forceps to facilitate medical staff to find the biopsy part that needs to be sampled in the patient's body.

Description

Technical Field

[0001] The invention relates to the technical field of medical equipment, in particular to a visual myocardial biopsy forceps. Background Art

[0002] Myocardial biopsy forceps is a medical device specially used in cardiovascular surgery. Its main function is to obtain myocardial tissue samples from the heart for pathological examination and diagnosis. When using myocardial biopsy forceps for cardiovascular surgery, the myocardial biopsy forceps is pushed to the right ventricle through the patient's right vein or femoral artery under the X-ray fluoroscopy of the cardiac catheter DSA room. When the myocardial biopsy forceps reaches the sampling site, the myocardial biopsy forceps is quickly closed to clamp the myocardial tissue sample, and then the myocardial biopsy forceps is withdrawn from the body to complete the sampling of myocardial tissue.

[0003] However, some pacemaker implanted patients have interference from pacing wires, which can make it difficult for the myocardial biopsy forceps to pass through the tricuspid valve, and even cause the myocardial biopsy forceps to become entangled with the pacing wires during movement, thus affecting the myocardial biopsy forceps sampling process. In addition, the current method of myocardial biopsy is often to directly move the myocardial biopsy forceps in and out, which can cause potential tricuspid valve damage when the myocardial biopsy forceps repeatedly move in and out of the patient's body, and it is often difficult to confirm with existing myocardial biopsy forceps whether the myocardial biopsy forceps have reached the biopsy site where sampling is required. Summary of the invention

[0004] In order to solve the problems that the existing myocardial biopsy forceps become entangled with the pacing wire when moving in the patient's body, repeatedly entering and exiting the patient's body may cause damage to the tricuspid valve, and it is impossible to confirm whether the myocardial biopsy forceps has reached the biopsy site where sampling is required, the present invention provides a visual myocardial biopsy forceps.

[0005] The technical implementation scheme of the present invention is: a visual myocardial biopsy forceps, comprising a handle, a connecting tube fixedly connected to one side of the handle, a first sliding member slidably connected to one end of the connecting tube away from the handle, a second sliding member provided on the side of the first sliding member away from the handle, a U-shaped frame fixedly connected to the side of the second sliding member away from the first sliding member, a mirror-distributed rotating member rotatably connected to the side of the U-shaped frame away from the second sliding member, the mirror-distributed rotating members are all fixedly connected to sampling forceps, a fixing ring is fixedly connected to the side of the connecting tube away from the handle, a protective cover is fixedly connected to the side of the fixing ring away from the connecting tube, a protective film distributed in an annular array is fixedly connected to the side of the protective cover away from the fixing ring, adjacent protective films are fitted with each other, the protective films distributed in an annular array are all in contact and cooperate with the mirror-distributed sampling forceps, and a miniature camera is provided in the connecting tube, which penetrates the first sliding member, the second sliding member, the U-shaped frame and the mirror-distributed sampling forceps and slidably cooperates with them.

[0006] Furthermore, the facing sides of the mirror-image distribution sampling pliers are fixedly connected with cutting knives distributed along the edge line array of the two pliers, and the cutting knives distributed along the edge line array of the two pliers on the mirror-image distribution sampling pliers are staggered.

[0007] Furthermore, the thickness of the fixing ring gradually increases from a side close to the first sliding member to a side far from the first sliding member.

[0008] Furthermore, the protective films distributed in the annular array and the sampling clamps distributed in the mirror image are cross-distributed, so that the adjacent protective films will not be torn when the sampling clamps distributed in the mirror image are opened.

[0009] Furthermore, the outer side of the protective cover is fixedly connected with guide members distributed in a circular array, and the guide members are used to assist the protective cover to slide in the patient's body. The protective cover is provided with a support component for providing support thereto.

[0010] Furthermore, the support assembly includes a first swing rod distributed in an annular array, the first swing rods distributed in an annular array are all rotatably connected to the side of the fixing ring away from the second sliding member, the first swing rods distributed in an annular array are all rotatably connected to the side of the fixing ring away from the second sliding member, the back sides of the fixing pins distributed in an annular array are fixedly connected to the middle part of the inner side of the protective cover, the first swing rods distributed in an annular array are all rotatably connected to the side of the fixing ring away from the second swing rods, the second swing rods distributed in an annular array are all rotatably connected to the side of the adjacent fixing pins, the third swing rod is fixedly connected to the adjacent protective film, the second swing rods distributed in an annular array are all fixedly connected to the side of the protective cover away from the fixing ring, and the first swing rod The angle formed by the adjacent second swing rod toward the side of the axis of the fixing ring is less than 180°, and the fixing ring is slidably connected to the side of the protective cover with a first piston rod distributed in an annular array, the first piston rod is fixedly connected to the adjacent third swing rod on the side away from the fixing ring, the fourth swing rod is fixedly connected to the side away from the adjacent second swing rod, a torsion spring is arranged between the fourth swing rod and the adjacent third swing rod, the fourth swing rods distributed in an annular array are respectively in contact with and cooperate with the sampling clamps distributed in a mirror image, the fourth swing rod is fixedly connected to the side of the adjacent protective film close to the axis of the fixing ring on the side away from the adjacent third swing rod, and a first driving assembly that drives the first piston rods distributed in the annular array to move is arranged in the connecting pipe.

[0011] Furthermore, the first driving assembly includes first fixed tubes distributed in an annular array, the first fixed tubes distributed in an annular array are all fixedly connected to a side of the connecting tube close to the fixed ring, the number of the first fixed tubes distributed in an annular array is consistent with the number of the first swing rods distributed in an annular array, the first fixed tubes distributed in an annular array are all slidably connected to a second piston rod on a side away from the third swing rod distributed in an annular array, the first sliding member is fixedly connected to a multi-stage elastic telescopic rod distributed in an annular array on a side facing the second sliding member, the telescopic end of the multi-stage elastic telescopic rod is fixedly connected to the adjacent second piston rod, the diameter of the second sliding member is smaller than the diameter of the first sliding member, the second fixed tubes distributed in an annular array are fixedly connected to the fixing ring, the second fixed tubes are slidably matched with the adjacent first piston rod, the fixing ring is fixedly connected to first connecting tubes distributed in an annular array, one end of the first connecting tube is connected to an end of the adjacent second fixed tube close to the adjacent first piston rod, the other end of the first connecting tube is connected to an end of the adjacent first fixed tube away from the adjacent second piston rod, hydraulic oil is stored in the first fixed tube, and the first sliding member is provided with a second driving assembly for driving the mirror-distributed rotating member to swing.

[0012] Furthermore, the second driving assembly includes a third fixed tube, the third fixed tube is arranged in the connecting tube, hydraulic oil is stored in the third fixed tube, one end of the third fixed tube is fixedly connected to the first sliding member, and the other end of the third fixed tube is fixedly connected to the handle, an oil storage chamber is arranged in the second sliding member, hydraulic oil is stored in the oil storage chamber, one end of the third fixed tube close to the first sliding member is fixedly connected and connected with the second connecting tube, one end of the second connecting tube away from the third fixed tube passes through the second sliding member and is connected with the oil storage chamber, the second sliding member is slidably connected with a third piston rod, the miniature camera passes through the third piston rod and slidably cooperates with the third piston rod, one side of the third piston rod is located in the oil storage chamber, the other side of the third piston rod passes through the U-shaped frame and slidably cooperates with the mirror-distributed rotating members, one end of the third fixed tube located on the handle is slidably connected with a fourth piston rod, and a spring is arranged between the fourth piston rod and the third fixed tube.

[0013] Furthermore, a fixing block is fixedly connected to one side of the connecting tube close to the fixing ring, a tension spring is arranged between the fixing block and the first sliding member, one end of the connecting tube located on the handle is fixedly connected to and connected to an airbag, and nitrogen is stored in both the connecting tube and the airbag.

[0014] Furthermore, it also includes a third driving component, which is arranged in the connecting tube, and the third driving component is used to drive the second sliding member to rotate, and the third driving component includes a wire sleeve, which is arranged in the connecting tube, one end of the wire sleeve is fixedly connected to the first sliding member, and the other end of the wire sleeve is fixedly connected to the handle, a wire core is slidably connected in the wire sleeve, one end of the wire core is fixedly connected to the second sliding member, the first sliding member and the second sliding member are rotatably matched, a torsion spring is arranged between the first sliding member and the second sliding member, a pressing member and an L-shaped frame are slidably connected in the handle, a spring is arranged between the L-shaped frame and the handle, the pressing member and the L-shaped frame are extrusion-matched, and the L-shaped frame is fixedly connected to the other end of the adjacent wire core.

[0015] The present invention has the following advantages: the present invention adopts a method of shielding and protecting the side of the myocardial biopsy forceps located in the patient's body, hiding the clamping part of the myocardial biopsy forceps in a protective shell, and setting a flexible protective shell at the clamping part of the myocardial biopsy forceps, so that the clamping part of the myocardial biopsy forceps will not damage the tricuspid valve when passing through the patient's body, and the clamping part of the myocardial biopsy forceps will not be entangled with the pacing wire when walking in the patient's body, and a miniature camera is installed at the clamping part of the myocardial biopsy forceps, so that medical staff can find the biopsy part that needs to be sampled in the patient's body;

[0016] When sampling the myocardial tissue in the patient's body, the contact between the protective cover and the annular array distributed protective film and the patient's body replaces the contact between the clamping part in the prior art myocardial active clamp and the patient's body. Under the action of the protective cover and the annular array distributed protective film being flexible materials, the tricuspid valve and other muscle tissues will not be damaged during the movement of the left end of the connecting tube in the patient's body, and the pacing wire will not be entangled during the movement of the left end of the connecting tube in the patient's body. The pacing wire is guided to a position away from the protective cover by the contact between the annular array distributed guide and the pacing wire, so as to facilitate the movement of the protective cover in the patient's body.

[0017] When sampling myocardial tissue in a patient's body, an active control mirror image distribution sampling clamp is used to open and merge, so that the mirror image distribution sampling clamp can be freely opened and merged in the patient's body, avoiding the influence of the torsion spring being unable to drive the sampling clamp to reset due to an accident in the existing torsion spring reset method;

[0018] When sampling myocardial tissue in a patient's body, the present invention uses a method of slightly adjusting the swing amplitude of the clamping part of the myocardial biopsy forceps in the patient's body, and the clamping part of the myocardial biopsy forceps can be adjusted without taking out the myocardial biopsy forceps again. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a front view of the three-dimensional structure of the present invention;

[0020] Figure 2 It is a three-dimensional structural cross-sectional view of the handle of the present invention;

[0021] Figure 3 It is a three-dimensional structural cross-sectional view of the connecting pipe of the present invention;

[0022] Figure 4 It is a three-dimensional structural cross-sectional view of the fixing ring of the present invention;

[0023] Figure 5 A three-dimensional structural cross-sectional view of the connecting pipe and the second sliding member of the present invention;

[0024] Figure 6 It is a three-dimensional structural cross-sectional view of the protective cover of the present invention;

[0025] Figure 7 It is an enlarged view of the three-dimensional structure of the protective cover of the present invention;

[0026] Figure 8 It is a three-dimensional structural cross-sectional view of the first fixing tube and the second fixing tube of the present invention;

[0027] Fig. 9 is a three-dimensional structural cross-sectional view of the first sliding member of the present invention;

[0028] Fig.10 It is a three-dimensional structural cross-sectional view of the third fixing tube of the present invention.

[0029] The meanings of the reference numerals in the figure are as follows: 1: handle, 10: connecting tube, 1001: fixed block, 11: first sliding member, 12: second sliding member, 13: U-shaped frame, 14: rotating member, 15: sampling forceps, 1501: cutting knife, 16: fixing ring, 17: protective cover, 18: protective film, 19: miniature camera, 2: guide member, 20: first swing rod, 21: fixing pin, 22: second swing rod, 23: third swing rod, 24: first piston rod, 25: fourth swing rod, 30: first fixed tube, 31: second piston rod, 32: multi-stage elastic telescopic rod, 33: second fixed tube, 34: first connecting tube, 40: third fixed tube, 41: oil storage chamber, 42: second connecting tube, 43: third piston rod, 44: fourth piston rod, 5: airbag, 50: wire sleeve, 51: wire core, 52: pressing member, 53: L-shaped frame. DETAILED DESCRIPTION

[0030] Reference to an embodiment herein means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present invention. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0031] In order to solve the problems that the existing myocardial biopsy forceps may become entangled with the pacing wire when moving in the patient's body, repeatedly entering and exiting the patient's body may cause damage to the tricuspid valve, and it is impossible to determine whether the myocardial biopsy forceps has reached the biopsy site where sampling is required, the present invention adopts: a method of shielding and protecting the side of the myocardial biopsy forceps located in the patient's body, hiding the clamping part of the myocardial biopsy forceps in a protective shell, and providing a flexible protective shell at the clamping part of the myocardial biopsy forceps, so that the clamping part of the myocardial biopsy forceps will not damage the tricuspid valve when passing through the patient's body, and the clamping part of the myocardial biopsy forceps will not become entangled with the pacing wire when moving in the patient's body, and a miniature camera 19 is installed at the clamping part of the myocardial biopsy forceps to facilitate medical staff to judge whether the myocardial biopsy forceps has reached the biopsy site where sampling is required.

[0032] Embodiment 1: A visual myocardial biopsy forceps, such as Figure 1-Figure 7As shown, it includes a handle 1, a connecting pipe 10 is fixedly connected to the left side of the handle 1, a first sliding member 11 is sealingly and slidably connected to the left end of the connecting pipe 10, a second sliding member 12 is arranged on the left side of the first sliding member 11, a U-shaped frame 13 is fixedly connected to the left side of the second sliding member 12, and the left side of the U-shaped frame 13 is limitedly rotatably connected to two rotating members 14 distributed in front and back mirror images, and the left sides of the two rotating members 14 distributed in front and back mirror images are fixedly connected to sampling clamps 15, the second sliding member 12 is located between the first sliding member 11 and the two sampling clamps 15 distributed in front and back mirror images, and the connecting member 13 is connected to the left side of the U-shaped frame 13. A fixing ring 16 is fixedly connected to the left end of the pipe 10. The thickness of the fixing ring 16 gradually decreases from the left side to the right side, so that the fixing ring 16 will not scratch the patient's muscle tissue when it is removed from the patient's body. A protective cover 17 is fixedly connected to the outside of the fixing ring 16. The protective cover 17 is made of a flexible material. Four protective films 18 distributed in an annular array are fixedly connected to the left side of the protective cover 17. The adjacent protective films 18 fit each other. The protective films 18 are fan-shaped and made of a flexible material. The protective films 18 distributed in an annular array are cross-distributed with the sampling clamps 15 distributed in a mirror image. The invention is used to prevent the mirror-distributed sampling forceps 15 from tearing the adjacent protective film 18 when opening. The protective films 18 distributed in the annular array are in contact with the left sides of the two mirror-distributed sampling forceps 15 in the front and rear. The contact between the protective cover 17 and the protective film 18 distributed in the annular array and the patient's body replaces the contact between the clamping part of the prior art myocardial active forceps and the patient's body. Under the action of the protective cover 17 and the protective film 18 distributed in the annular array being flexible materials, the tricuspid valve and the left end of the connecting tube 10 will not be damaged during the movement of the left end of the connecting tube 10 in the patient's body. Other muscle tissues, and the left end of the connecting tube 10 will not be entangled with the pacing wire during the movement in the patient's body. A miniature camera 19 is arranged in the connecting tube 10, which penetrates the first sliding member 11, the second sliding member 12, the U-shaped frame 13 and the mirror-image distribution sampling clamp 15 and slides with them. The opposite sides of the mirror-image distribution sampling clamp 15 are fixedly connected with cutting knives 1501 distributed along the edge line array of the two. The cutting knives 1501 distributed along the edge line array of the two on the mirror-image distribution sampling clamp 15 are staggered and used for cutting myocardial tissue.

[0033] like Figure 3 As shown, the outer side of the protective cover 17 is fixedly connected with a guide member 2 distributed in a circular array. The guide member 2 is made of a flexible material and is used to assist the protective cover 17 in sliding in the patient's body. The protective cover 17 is provided with a support assembly for providing support thereto. The guide member 2 distributed in a circular array contacts the pacing lead, and the pacing lead is guided to a position away from the protective cover 17 to facilitate the movement of the protective cover 17 in the patient's body.

[0034] like Figure 4 and Figure 6-Figure 8As shown, the support assembly includes four first swing rods 20 distributed in a circular array, the four first swing rods 20 distributed in the circular array are all rotatably connected to the left side of the fixing ring 16, the left side of the first swing rod 20 is rotatably connected to the fixing pin 21, the back side of the fixing pin 21 distributed in the circular array is fixedly connected to the middle part of the inner side of the protective cover 17, the left side of the first swing rod 20 is rotatably connected to the second swing rod 22, the left side of the second swing rod 22 is rotatably connected to the third swing rod 23, the third swing rod 23 is fixedly connected to the inner side of the adjacent protective film 18, the four second swing rods 22 distributed in the circular array are all fixedly connected to the left side of the protective cover 17, the angle formed by the first swing rod 20 and the adjacent second swing rod 22 toward the axis of the fixing ring 16 is less than 180°, so that the first swing rod 20 and the adjacent second swing rod 2 2 swings to the side away from the axis of the fixing ring 16, the left side of the fixing ring 16 is limitedly slidably connected with four first piston rods 24 distributed in an annular array, the left side of the first piston rod 24 is fixedly connected to the adjacent third swing rod 23, the third swing rod 23 is fixedly connected to the side facing the adjacent first piston rod 24 with a fourth swing rod 25, a torsion spring is arranged between the fourth swing rod 25 and the adjacent third swing rod 23, the torsion spring is used to drive the adjacent third swing rod 23 to reset and swing, the four fourth swing rods 25 distributed in the annular array are respectively in contact with the two sampling clamps 15 distributed in the front and rear mirror images, the opposite sides of the four fourth swing rods 25 distributed in the annular array are respectively fixedly connected to the opposite sides of the four protective films 18 distributed in the annular array, and a first driving component that drives the first piston rods 24 distributed in the annular array to move is arranged in the connecting pipe 10.

[0035] like Figure 4 and Figure 6-Figure 8 As shown, the first driving assembly includes four first fixed tubes 30 distributed in an annular array, the four first fixed tubes 30 distributed in an annular array are all fixedly connected to the left side of the connecting tube 10, the right sides of the four first fixed tubes 30 distributed in an annular array are all sealed and slidably connected with the second piston rod 31, the left side of the first sliding member 11 is fixedly connected with four multi-stage elastic telescopic rods 32 distributed in an annular array, the telescopic end of the multi-stage elastic telescopic rod 32 is fixedly connected to the right end of the adjacent second piston rod 31, the diameter of the second sliding member 12 is smaller than the diameter of the first sliding member 11, and the fixing ring 1 6 is fixedly connected to the outer side with four second fixed tubes 33 distributed in a circular array, the second fixed tubes 33 are sealingly and slidingly matched with the adjacent first piston rod 24, the fixed ring 16 is fixedly connected to the outer side with four first connecting tubes 34 distributed in a circular array, the right end of the first connecting tube 34 is connected to the left end of the adjacent second fixed tube 33, the left end of the first connecting tube 34 is connected to the adjacent first fixed tube 30, hydraulic oil is stored in the first fixed tube 30, and the first sliding member 1 is provided with a second driving component for driving the mirror distribution rotating member 14 to swing.

[0036] like Figure 2-Figure 5 , Fig. 9and Fig.10 As shown, the second driving assembly includes a third fixed tube 40 arranged in the connecting tube 10, hydraulic oil is stored in the third fixed tube 40, the left end of the third fixed tube 40 is fixedly connected to the first sliding member 11, the right end of the third fixed tube 40 is fixedly connected to the handle 1, the second sliding member 12 is provided with an oil storage chamber 41, hydraulic oil is stored in the oil storage chamber 41, the left side of the third fixed tube 40 is fixedly connected and connected with a second connecting tube 42, the left end of the second connecting tube 42 passes through the second sliding member 12 and is connected with the oil storage chamber 41, the second sliding member 12 is sealingly and slidably connected with a third piston rod 43, the left side of the third piston rod 43 is not sealingly and slidably matched with the second sliding member 12, and the micro camera 19 passes through the third The piston rod 43 is slidably matched with the piston rod 43, the right side of the third piston rod 43 is located in the oil storage chamber 41, the left side of the third piston rod 43 passes through the U-shaped frame 13 and is slidably matched with the two rotating parts 14 distributed in the front and rear mirror images, the right end of the third fixed tube 40 is sealed and slidably connected with the fourth piston rod 44, a spring is arranged between the fourth piston rod 44 and the third fixed tube 40, this spring is used to drive the fourth piston rod 44 to reset and move, a fixed block 1001 is fixedly connected to one side of the connecting tube 10 close to the fixed ring 16, a tension spring is arranged between the fixed block 1001 and the first sliding member 11, the right end of the connecting tube 10 is fixedly connected and connected with the airbag 5, and nitrogen is stored in both the connecting tube 10 and the airbag 5.

[0037] The specific implementation method is as follows: when it is necessary to use the device to sample the patient's myocardial tissue, the medical staff gradually inserts the left end of the connecting tube 10 into the patient's body. When the left side of the connecting tube 10 moves in the patient's body, the contact between the protective cover 17 and the annular array distributed protective film 18 and the patient's body replaces the contact between the clamping part and the patient's body in the prior art, so that the left end of the connecting tube 10 will not be entangled with the pacing wire during the movement of the connecting tube 10 in the patient's body, and under the action of the protective cover 17 and the annular array distributed protective film 18, which are flexible materials, the tricuspid valve and other muscle tissues will not be damaged during the movement of the left end of the connecting tube 10 in the patient's body, and the annular array distributed guide 2 is in contact with the pacing wire to guide the pacing wire to a position away from the protective cover 17 to facilitate the movement of the protective film 18 in the patient's body.

[0038] When the left end of the connecting tube 10 moves in the patient's body to the part where sampling is required, the medical staff squeezes the airbag 5. After the airbag 5 is compressed, it squeezes the nitrogen in the connecting tube 10, so that the first sliding member 11 drives its attached parts to move to the left through the second sliding member 12 (the adjacent tension spring is stretched during the movement of the first sliding member 11 to the left). In the process of the first sliding member 11 driving the multi-stage elastic telescopic rod 32 distributed in the annular array to move to the left, the first sliding member 11 drives the second piston rod 31 distributed in the annular array to slide to the left through the multi-stage elastic telescopic rod 32 distributed in the annular array by virtue of the elastic force of the multi-stage elastic telescopic rod 32 distributed in the annular array.

[0039] Taking the sliding process of one of the second piston rods 31 as an example, during the sliding process of the second piston rod 31, the hydraulic oil in the adjacent first fixed tube 30 is squeezed into the adjacent second fixed tube 33 through the adjacent first connecting tube 34, and the hydraulic oil entering the adjacent second fixed tube 33 drives the adjacent first piston rod 24 to move to the right, and the first piston rod 24 drives the adjacent third swing rod 23 to move to the right. Under the effect that the angle between the second swing rod 22 and the adjacent first swing rod 20 is less than 180°, the middle parts of the second swing rod 22 and the adjacent first swing rod 20 are expanded outward, and the outer sides of the middle parts of the protective cover 17 and the annular array distribution guide 2 are bulged around to reduce the lateral length of the protective cover 17. When the protective cover 17 is retracted to the extreme position, the left side of the second piston rod 31 has been fitted with the left side of the adjacent first fixed tube 30, and the hydraulic oil in the first fixed tube 30 has been completely pushed into the adjacent second fixed tube 33. At this time, the left side of the mirror distribution sampling clamp 15 has been fitted with the right side of the fourth swing rod 25 of the annular array distribution protective film 18.

[0040] After the protective cover 17 shrinks to the limit position, the first sliding member 11 drives its accessory parts to continue to move to the left side. In the process of the first sliding member 11 driving the multi-stage elastic telescopic rod 32 distributed in the annular array to move to the left side, the telescopic part of the multi-stage elastic telescopic rod 32 distributed in the annular array is squeezed. In the process of the first sliding member 11 driving the mirror-image distributed sampling forceps 15 and its accessory parts to move to the right side, the mirror-image distributed sampling forceps 15 squeeze the fourth swing rod 25 distributed in the annular array, so that the array-distributed fourth swing rod 25 respectively drives the opposite sides of the annular array distributed protective film 18 to swing outward (the adjacent torsion springs are gradually tightened during the swinging process of the fourth swing rod 25), so that the mirror-image distributed sampling forceps 15 are exposed to the patient's body.

[0041] During the movement of the mirror-image distribution sampling forceps 15 and the first sliding member 11, the telescopic parts in the annular array distributed multi-stage elastic telescopic rod 32 are all squeezed into them. At this time, the mirror-image distribution sampling forceps 15 and the first sliding member 11 no longer move, and the airbag 5 has been pressed to the limit position. At this time, the medical staff pulls the fourth piston rod 44 upward (the adjacent spring is squeezed during the upward movement of the fourth piston rod 44), and the fourth piston rod 44 extracts the hydraulic oil in the third fixed tube 40, so that the hydraulic oil in the oil storage chamber 41 is extracted into the second connecting tube 42 and flows into the third fixed tube 40, and the third piston rod 43 moves to the right. During the movement of the third piston rod 43 to the right, the mirror-image distribution rotating member 14 and the sampling forceps 15 expand outward, thereby getting rid of the obstruction of the micro camera 19, and then the medical staff observes the patient's body through the micro camera 19.

[0042] When the medical staff finds the myocardial tissue that needs to be sampled through the micro camera 19, the medical staff presses the fourth piston rod 44 downward, and the fourth piston rod 44 accelerates the downward movement speed of the fourth piston rod 44 under the action of the adjacent spring. During the downward movement of the fourth piston rod 44, the hydraulic oil in the third fixed tube 40 is squeezed, so that the hydraulic oil in the third fixed tube 40 flows through the second connecting tube 42 and flows into the oil storage chamber 41. The hydraulic oil in the oil storage chamber 41 squeezes the third piston rod 43 to the left when it contacts it. During the movement of the third piston rod 43 to the left, the mirror-distributed rotating part 14 and the sampling clamp 15 are reset and swung inward, and the myocardial tissue that needs to be sampled is clamped by the swing of the mirror-distributed sampling clamp 15, thereby completing the sampling of the myocardial tissue.

[0043] In the process of clamping the patient's myocardial tissue, the mirror-distributed sampling forceps 15 reset and swing, driving all the cutting knives 1501 thereon to move toward each other, so that the cutting knives 1501 cut the patient's myocardial tissue, thereby enhancing the effect of the mirror-distributed sampling forceps 15 on clamping the myocardial tissue.

[0044] After the sampling forceps 15 distributed in a mirror image clamps the myocardial tissue between the two, the medical staff no longer squeezes the airbag 5, and the nitrogen in the connecting tube 10 is no longer compressed. Under the action of the tension provided by the adjacent tension spring of the first sliding member 11, the first sliding member 11, the second sliding member 12, the mirror-distributed rotating member 14 and the sampling forceps 15 and their accessory parts are moved to the right and reset. When the multi-stage elastic telescopic rod 32 distributed in an annular array and the first sliding member 11 reset and slide, the telescopic part of the multi-stage elastic telescopic rod 32 distributed in an annular array is gradually pulled out. When the telescopic part of the multi-stage elastic telescopic rod 32 distributed in an annular array is completely pulled out, the fourth swing rod 25 distributed in an annular array is no longer squeezed by the sampling forceps 15 distributed in a mirror image, and the fourth swing rod 25 swings and resets under the action of the adjacent torsion spring.

[0045] After the telescopic parts of the multi-stage elastic telescopic rods 32 distributed in the annular array are all pulled out, the first sliding member 11 drives the second piston rods 31 distributed in the annular array to reset and move through the multi-stage elastic telescopic rods 32 distributed in the annular array. Taking the reset process of one of the second piston rods 31 as an example, during the reset movement of the second piston rod 31, the hydraulic oil in the adjacent second fixed tube 33 is extracted through the adjacent first connecting tube 34, so that the first piston rod 24 resets and slides, and the first piston rod 24 drives the adjacent third swing rod 23 to slide to the left, so that the outer side of the protective film 18 retracts inward, and the length of the protective cover 17 is gradually restored.

[0046] When the first sliding member 11 is pulled to the basic state by the tension spring (that is, the first sliding member 11 is Figure 4 and Figure 5 The protective cover 17 has been restored to the basic state (i.e. Figure 3The connecting tube 10 is then taken out of the patient's body by medical personnel. As the thickness of the left side of the fixing ring 16 is greater than that of the right side thereof, the muscle tissue in the patient's body is stretched open, thereby facilitating the removal of the fixing ring 16 and the connecting tube 10. After the connecting tube 10 is taken out, the medical personnel repeat the above-mentioned expansion process of the mirror distribution sampling forceps 15 to take out the myocardial tissue in the mirror distribution sampling forceps 15.

[0047] In the first embodiment, the first sliding member 11 is fixedly connected to the second sliding member 12 . In the second embodiment, the first sliding member 11 is rotationally matched to the second sliding member 12 .

[0048] In the process of sampling the patient's myocardial tissue, the patient's myocardial tissue to be sampled will shift with the beating of the patient's heart, which will have a certain impact on the sampling, and the existing myocardial biopsy forceps can only achieve the sampling of the patient's myocardial tissue. If the patient's myocardial tissue to be sampled shifts, the myocardial biopsy forceps needs to be moved out of the patient's body again, and the clamping part of the myocardial biopsy forceps needs to be properly trimmed, and then the myocardial biopsy forceps is put back into the patient's body. During this process, the myocardial biopsy forceps reciprocates in the patient's body, which not only affects other muscle tissues in the patient's body, but also fails to achieve the effect of adjustment as needed. The present invention adopts a method of fine-tuning the swing amplitude of the clamping part of the myocardial biopsy forceps in the patient's body, and the clamping part of the myocardial biopsy forceps can be adjusted without taking out the myocardial biopsy forceps again.

[0049] Embodiment 2: Based on embodiment 1, Figure 2 , Fig. 9 and Fig.10 As shown, it also includes a third driving component, which is arranged in the connecting tube 10. The third driving component is used to drive the second sliding member 12 to rotate, so as to adjust the clamping position of the two sampling forceps 15 distributed in front and back mirror images on the patient. The third driving component includes a wire sleeve 50 arranged in the connecting tube 10, the left end of the wire sleeve 50 is fixedly connected to the first sliding member 11, the right end of the wire sleeve 50 is fixedly connected to the handle 1, and a wire core 51 is limitedly slidably connected in the wire sleeve 50, and the left side of the wire core 51 is fixedly connected to the upper side of the second sliding member 12. The first sliding The first sliding member 11 is matched with the second sliding member 12 for limited rotation. A torsion spring is arranged between the first sliding member 11 and the second sliding member 12. This torsion spring is used to drive the second sliding member 12 to reset and swing. A pressing member 52 and an L-shaped frame 53 are connected to the handle 1 for limited sliding. The positions where the pressing member 52 and the L-shaped frame 53 are fitted are provided with inclined surfaces. A spring is arranged between the L-shaped frame 53 and the handle 1. This spring is used to drive the L-shaped frame 53 to reset and slide. The pressing member 52 and the L-shaped frame 53 are squeezed and matched. The L-shaped frame 53 is fixedly connected to the right end of the wire core 51.

[0050] The specific implementation is as follows: when the left end of the connecting tube 10 is located at the part of the patient's body where sampling is required, the protective cover 17 has been completely retracted, and the sampling clamps 15 distributed in a mirror image have been opened. At this time, the medical staff observes the patient's body through the micro camera 19. When the part of the patient where sampling is required is displaced, the medical staff presses the pressing member 52, and the pressing member 52 squeezes the L-shaped frame 53 to move to the right (the adjacent spring is squeezed during the movement of the L-shaped frame 53), and the L-shaped frame 53 drives the wire core 51 to move to the right, and the left side of the wire core 51 pulls the second sliding member 12, so that the second The sliding member 12 swings upward along the left side of the first sliding member 11 (the adjacent torsion spring is gradually tightened during the swinging of the second sliding member 12), and the second sliding member 12, the mirror-distributed U-shaped frame 13 and the sampling clamp 15 swing to the upper left side, so as to realize the swinging of the mirror-distributed sampling clamp 15, so that the mirror-distributed sampling clamp 15 swings toward the displaced part in the annular body, and then the medical staff controls the mirror-distributed sampling clamp 15 to swing toward each other (the process of the mirror-distributed sampling clamp 15 swinging toward each other can be repeated as described above), so as to clamp the displaced myocardial tissue of the patient.

[0051] After completing the sampling of the patient's displaced myocardial tissue, the medical staff releases the pressing piece 52, and under the action of the reset force provided by the adjacent spring of the L-shaped frame 53, the L-shaped frame 53 and the wire core 51 are reset to the left, and the pressing piece 52 is reset to the upper side.

[0052] When the L-shaped frame 53 loses the drag on the wire core 51, the second sliding member 12 rotates and returns along the first sliding member 11 under the action of the adjacent torsion spring to restore the Figure 4 and Figure 5 The basic state in the process of removing the connecting tube 10 can be repeated as described above.

[0053] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A visual myocardial biopsy forceps, characterized in that: The invention comprises a handle (1), a connecting tube (10) is fixedly connected to one side of the handle (1), a first sliding member (11) is slidably connected to one end of the connecting tube (10) away from the handle (1), a second sliding member (12) is provided on the side of the first sliding member (11) away from the handle (1), a U-shaped frame (13) is fixedly connected to the side of the second sliding member (12) away from the first sliding member (11), a mirror-distributed rotating member (14) is rotatably connected to the side of the U-shaped frame (13) away from the second sliding member (12), the mirror-distributed rotating members (14) are all fixedly connected to sampling clamps (15), the connecting tube (10) is away from the handle (1) ) is fixedly connected to one side of the connecting tube (10), a protective cover (17) is fixedly connected to the side of the connecting tube (10) away from the fixing ring (16), a protective film (18) distributed in an annular array is fixedly connected to the side of the protective cover (17) away from the fixing ring (16), adjacent protective films (18) are fitted to each other, and the protective films (18) distributed in an annular array are all in contact with the sampling clamps (15) distributed in a mirror image, and a micro camera (19) is provided in the connecting tube (10), which penetrates the first sliding member (11), the second sliding member (12), the U-shaped frame (13) and the sampling clamps (15) distributed in a mirror image and is slidably matched with them; The outer side of the protective cover (17) is fixedly connected with guide members (2) distributed in a circular array, the guide members (2) are used to assist the protective cover (17) to slide in the patient's body, and a support component for providing support thereto is arranged inside the protective cover (17); The support assembly comprises first swinging rods (20) distributed in an annular array, the first swinging rods (20) distributed in an annular array are all rotatably connected to a side of the fixing ring (16) away from the second sliding member (12), the first swinging rods (20) distributed in an annular array are all rotatably connected to a fixing pin (21) on the side away from the fixing ring (16), the back side of the fixing pin (21) distributed in an annular array is fixedly connected to the middle part of the inner side of the protective cover (17), the first swinging rods (20) distributed in an annular array are all rotatably connected to a second swinging rod (22) on the side away from the fixing ring (16), the second swinging rods (22) distributed in an annular array are all rotatably connected to a third swinging rod (23) on the side away from the adjacent fixing pin (21), the third swinging rod (23) is fixedly connected to the adjacent protective film (18), the second swinging rods (22) distributed in an annular array are all fixedly connected to a side of the protective cover (17) away from the fixing ring (16), the first swinging rod (20) and the adjacent The angle formed by the second swing rod (22) toward the axis of the fixing ring (16) is less than 180°. The fixing ring (16) is slidably connected to a first piston rod (24) distributed in an annular array on one side facing the protective cover (17). The first piston rod (24) is fixedly connected to the adjacent third swing rod (23) on the side away from the fixing ring (16). The third swing rod (23) is fixedly connected to the adjacent second swing rod (22) on the side away from the fourth swing rod (25). A torsion spring is provided between the fourth swing rod (25) and the adjacent third swing rod (23). The fourth swing rods (25) distributed in an annular array are respectively in contact with the sampling forceps (15) distributed in a mirror image. The fourth swing rod (25) is fixedly connected to the adjacent protective film (18) close to the axis of the fixing ring (16) on the side away from the adjacent third swing rod (23). A first driving assembly for driving the first piston rods (24) distributed in an annular array to move is provided in the connecting pipe (10); The first driving assembly comprises first fixed tubes (30) distributed in an annular array, the first fixed tubes (30) distributed in an annular array are all fixedly connected to a side of the connecting tube (10) close to the fixed ring (16), the number of the first fixed tubes (30) distributed in an annular array is consistent with the number of the first swing rods (20) distributed in an annular array, the first fixed tubes (30) distributed in an annular array are all slidably connected to a second piston rod (31) on a side away from the third swing rod (23) distributed in an annular array, the first sliding member (11) is fixedly connected to a side facing the second sliding member (12) with a multi-stage elastic telescopic rod (32) distributed in an annular array, the telescopic end of the multi-stage elastic telescopic rod (32) is fixedly connected to an adjacent second piston rod (31), and the second sliding member (12) is fixedly connected to a side of the first sliding member (11) facing the second sliding member (12). The diameter of the first sliding member (11) is smaller than that of the first sliding member (11); the fixing ring (16) is fixedly connected with second fixing tubes (33) distributed in an annular array; the second fixing tubes (33) are slidably matched with the adjacent first piston rods (24); the fixing ring (16) is fixedly connected with first connecting tubes (34) distributed in an annular array; one end of the first connecting tube (34) is connected with one end of the adjacent second fixing tube (33) close to the adjacent first piston rod (24); the other end of the first connecting tube (34) is connected with one end of the adjacent first fixing tube (30) away from the adjacent second piston rod (31); hydraulic oil is stored in the first fixing tube (30); and the first sliding member (11) is provided with a second driving component for driving the mirror-distributed rotating member (14) to swing.

2. A visual myocardial biopsy forceps according to claim 1, characterized in that: The facing sides of the mirror-image distributed sampling pliers (15) are fixedly connected with cutting knives (1501) distributed along the edge line array of the two pliers, and the cutting knives (1501) distributed along the edge line array of the two pliers (15) in the mirror-image distributed sampling pliers (15) are staggered.

3. The visual myocardial biopsy forceps according to claim 1, characterized in that: The thickness of the fixing ring (16) gradually increases from a side close to the first sliding member (11) to a side far from the first sliding member (11).

4. The visual myocardial biopsy forceps according to claim 2, characterized in that: The protective films (18) distributed in an annular array and the sampling clamps (15) distributed in a mirror image are distributed in a cross-distribution manner, so that when the sampling clamps (15) distributed in a mirror image are opened, the adjacent protective films (18) will not be torn.

5. The visual myocardial biopsy forceps according to claim 1, characterized in that: The second driving assembly comprises a third fixed tube (40), the third fixed tube (40) being arranged in the connecting tube (10), the third fixed tube (40) storing hydraulic oil, one end of the third fixed tube (40) being fixedly connected to the first sliding member (11), the other end of the third fixed tube (40) being fixedly connected to the handle (1), an oil storage chamber (41) being arranged in the second sliding member (12), the oil storage chamber (41) storing hydraulic oil, one end of the third fixed tube (40) close to the first sliding member (11) being fixedly connected to and connected to the second connecting tube (42), the second connecting tube (42) being located at one end away from the third fixed tube (40). The second sliding member (12) is connected to the oil storage chamber (41), the second sliding member (12) is slidably connected to a third piston rod (43), the micro camera (19) is connected to the third piston rod (43) and is slidably matched with the third piston rod, one side of the third piston rod (43) is located in the oil storage chamber (41), the other side of the third piston rod (43) is connected to the U-shaped frame (13) and is slidably matched with the mirror-distributed rotating member (14), and one end of the third fixed tube (40) located on the handle (1) is slidably connected to a fourth piston rod (44), and a spring is provided between the fourth piston rod (44) and the third fixed tube (40).

6. The visual myocardial biopsy forceps according to claim 5, characterized in that: A fixing block (1001) is fixedly connected to one side of the connecting tube (10) close to the fixing ring (16), a tension spring is arranged between the fixing block (1001) and the first sliding member (11), one end of the connecting tube (10) located on the handle (1) is fixedly connected to and communicated with an air bag (5), and nitrogen is stored in both the connecting tube (10) and the air bag (5).

7. The visual myocardial biopsy forceps according to claim 6, characterized in that: The invention also comprises a third driving assembly, the third driving assembly being arranged in the connecting tube (10), the third driving assembly being used for driving the second sliding member (12) to rotate, the third driving assembly comprising a wire sleeve (50), the wire sleeve (50) being arranged in the connecting tube (10), one end of the wire sleeve (50) being fixedly connected to the first sliding member (11), the other end of the wire sleeve (50) being fixedly connected to the handle (1), a wire core (51) being slidably connected in the wire sleeve (50), and the wire core (51) being One end is fixedly connected to the second sliding member (12); the first sliding member (11) and the second sliding member (12) are rotationally matched; a torsion spring is provided between the first sliding member (11) and the second sliding member (12); a pressing member (52) and an L-shaped frame (53) are slidably connected in the handle (1); a spring is provided between the L-shaped frame (53) and the handle (1); the pressing member (52) and the L-shaped frame (53) are pressed and matched; and the L-shaped frame (53) is fixedly connected to the other end of the adjacent wire core (51).

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