Endocervical biopsy device

Abstract

The present invention relates to the technical field of cervical diagnostic equipment, and in particular to a cervical canal biopsy device, comprising an outer tube, a chuck and a swing control component. The present invention drives a connecting shaft to rotate through a motor, the connecting shaft drives a bent plate to rotate, the bent plate drives a U-shaped plate to rotate, the U-shaped plate drives a shaft rod to rotate, the shaft rod drives a base block and the chuck to rotate as a whole, so that the chuck can face a sampling position located on the side of the front end of the outer tube, pinch a handle, the handle pulls a traction rope, the traction rope pulls a sliding shaft, the sliding shaft pulls an intermediate block, the intermediate block drives a connecting rod to rotate, the connecting rod drives a bent rod to rotate, the bent rod drives a clamp petal to rotate, and tissue is clamped for sampling. The chuck is controlled to rotate left and right and to open and close simultaneously through a swing control component and an opening and closing control component, and the lesion located on the side of the front end can be clamped directly without twisting the whole body, so that biopsy sampling can be performed more flexibly and accurately, the pulling and squeezing of the cervix and its surrounding tissues are reduced, and the risks of postoperative bleeding, infection and scar formation are reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of cervical diagnosis equipment, and in particular to a cervical canal biopsy device. Background Art

[0002] Endocervical biopsy is of great significance for the early detection and treatment of cervical diseases. It generally obtains tissue samples from the endocervical canal in an invasive manner to diagnose cervical diseases, especially the early changes of cervical cancer. Traditional cervical biopsy instruments have certain limitations. For example, in the patent application number CN202123153516.4, a "endocervical biopsy device" is proposed, which drives the movable rod forward by closing the fixed handle and the movable handle, and the upper forceps head cuts straight downward and fits with the lower scraper head to cut the required biopsy tissue. However, in actual operation, the lesion site is often located deeper or on the side of the endocervical canal. The forceps head of this type of traditional biopsy device usually does not have a flexible steering function, which means that when facing non-positive lesions, the doctor must change the overall direction of the instrument through external operation, which is particularly inconvenient in areas such as the cervix where space is limited and the anatomical structure is complex, and it is easy to cause inaccurate sampling or damage to surrounding normal tissues. Summary of the invention

[0003] 1. Technical issues to be solved

[0004] The object of the present invention is to provide a cervical canal biopsy device, which can simultaneously control the opening and closing and rotation of the chuck without the need for overall twisting, can quickly and accurately locate the lesion, and reduce the pulling and squeezing of the cervix and its surrounding tissues.

[0005] 2. Technical Solution

[0006] The present invention is achieved through the following technical solutions:

[0007] The present invention provides a cervical canal biopsy device, comprising:

[0008] External pipe;

[0009] A chuck is arranged at the front end of the outer tube, the chuck comprises a base block, two jaws connected to the base block and capable of opening and closing to clamp biopsy tissue, two coaxial shafts respectively fixed to the upper and lower surfaces of the base block, and an opening and closing control assembly for controlling the opening and closing of the jaws, the shaft being rotatably connected to the inner wall of the outer tube;

[0010] A swing control assembly, the swing control assembly includes a U-shaped plate, a bent plate, a motor, and a connecting shaft coaxially connected to the output end of the motor, the U-shaped plate includes two parallel side plates and an intermediate plate connected between the two side plates, the two side plates surround both sides of a shaft rod and are pivotally connected to the shaft rod through a pin shaft, the bent plate includes a first connecting plate section and a second connecting plate section, the first connecting plate section is parallel to and fixedly connected to the end of the connecting shaft, the second connecting plate section is parallel to and rotationally connected to the outer surface of the intermediate plate of the U-shaped plate, and the central axis of the connecting shaft is coplanar with the central axis of the shaft rod.

[0011] Furthermore, a bracket is fixedly connected to the other end of the outer tube relative to the chuck, and the motor is fixed on the bracket; two coaxial rotating holes are relatively opened on the wall of the outer tube, and the two shafts are rotatably connected to the two rotating holes respectively, and the ends of the shafts extend to the outside of the outer tube and are fixedly connected to the end.

[0012] Furthermore, the interior of the base block is hollow, and through grooves connected to the interior are provided on both sides of the base block, and a sliding hole connected to the interior is provided on the inner end, and the axial direction of the sliding hole is coplanar and perpendicular to the axial direction of the shaft rod; the opening and closing control component includes an intermediate block and a traction member for driving the intermediate block to move along the axial direction of the sliding hole, and connecting rods are hinged on both sides of the intermediate block, and bent rods are hinged at the ends of the connecting rods, and the ends of the bent rods extend out of the base block and are hinged to the clamp flaps, and the bent rods are rotatably connected to the upper and lower walls of the base block at their turning points through short axes, and the outer side of the base block and the surface of the clamp flap are also hinged to each other through strips.

[0013] Furthermore, the traction member includes a sliding shaft slidably connected to the sliding hole, a through hole coaxial with the sliding hole is opened in the middle of the intermediate block, one end of the sliding shaft extends into the through hole, and the other end extends out of the base block, and two parallel limit plates are fixed to the outside of the sliding shaft, and the two limit plates are respectively in contact with the two sides of the intermediate block so that the intermediate block can move axially synchronously with the sliding shaft; a connecting end is fixed to the other end of the sliding shaft extending out of the base block, and a spring is arranged outside the sliding shaft, and the two ends of the spring are respectively fixedly connected to the connecting end and the surface of the base block, and the connecting end is fixedly connected to a traction rope, and the traction rope passes through the outer tube to the end where the bracket is located.

[0014] Furthermore, the bracket includes a transverse arc plate fixedly connected to the outer tube, a fixed handle fixed below the end of the transverse arc plate, and a grip hinged below the middle of the transverse arc plate. The grip and the fixed handle are connected by an elastic member, and the elastic member is a leaf spring. The end of the traction rope is fixedly connected to the grip.

[0015] Furthermore, a camera is fixedly connected to the end of the outer tube near the clamp, and a display screen electrically connected to the camera is fixedly connected to the top of the bracket.

[0016] Furthermore, a control switch electrically connected to the motor is fixed on the handle, and the motor is a micro reduction motor.

[0017] Furthermore, the back side of the clamp flap has an outwardly protruding protrusion, the end of the bent rod is forked and has two fork ends respectively hinged to the protrusion; the strip is also hinged to the surface of the protrusion, and the hinge point between the strip and the protrusion is farther away from the base block than the hinge point between the fork end and the protrusion.

[0018] Furthermore, the jaws are box-shaped containers with a hollow interior, and the opposite sides of the two jaws are open. The edges of the jaws are provided with serrations, and when the two jaws are relatively closed, the serrations are interlocked.

[0019] 3. Beneficial Effects

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The present invention drives the connecting shaft to rotate by a motor, the connecting shaft drives the curved plate to rotate, the curved plate drives the U-shaped plate to rotate, the U-shaped plate drives the shaft rod to rotate, the shaft rod drives the base block and the chuck to rotate as a whole, so that the chuck can face the sampling position located on the side of the front end of the outer tube, pinch the grip, the grip pulls the traction rope, the traction rope pulls the sliding shaft, the sliding shaft pulls the middle block, the middle block drives the connecting rod to rotate, the connecting rod drives the curved rod to rotate, the curved rod drives the clamp petal to rotate, and the tissue is clamped for sampling. The swing control component and the opening and closing control component simultaneously control the left and right rotation and opening and closing of the chuck, without the need for overall twisting, the lesion located on the side of the front end can be clamped directly, and more flexible and accurate biopsy sampling can be achieved; and the lesion on the cervix can be correctly located by fine-tuning the chuck, which greatly reduces the pulling and squeezing of the cervix and its surrounding tissues, and reduces the risks of postoperative bleeding, infection and scar formation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0023] Figure 2 yes Figure 1 The main perspective view;

[0024] Figure 3 It is a connection diagram of the opening and closing control component, the swing control component, and the chuck;

[0025] Figure 4 It is an exploded view of the opening and closing control assembly;

[0026] Figure 5 It is a schematic diagram of the connection between the U-shaped plate and the bent plate;

[0027] 1. outer tube; 11. rotating hole; 2. chuck; 21. base block; 211. through slot; 212. sliding hole; 22. jaws; 221. convex block; 23. shaft; 24. end; 25. opening and closing control assembly; 251. middle block; 2511. through hole; 252. connecting rod; 253. bending rod; 2531. fork end; 254. short shaft; 255. strip; 256. traction member; 2561. sliding shaft; 2562. limit plate; 256 3. Connecting end; 2564. Spring; 2565. Towing rope; 3. Swing control assembly; 31. U-shaped plate; 311. Side plate; 312. Middle plate; 32. Bend plate; 321. First connecting plate section; 322. Second connecting plate section; 33. Motor; 34. Connecting shaft; 35. Pin shaft; 4. Bracket; 41. Horizontal arc plate; 42. Fixed handle; 43. Grip; 44. Elastic member; 5. Camera; 6. Display screen; 7. Control switch. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0029] A cervical biopsy instrument, see Figure 1-5 , including an outer tube 1, a clamp 2 arranged at the front end of the outer tube 1, a swing control component 3 for controlling the rotation of the clamp 2 to change the direction, and a bracket 4, wherein the bracket 4 is fixedly connected to the other end of the outer tube 1 relative to the clamp 2.

[0030] Among them, the chuck 2 includes a base block 21, two jaws 22 connected to the base block 21, two coaxial shafts 23 respectively fixed on the upper and lower surfaces of the base block 21, and an opening and closing control component 25 for controlling the opening and closing of the jaws 22. The jaws 22 can be opened and closed to clamp biopsy tissue. Two coaxial rotating holes 11 are relatively opened on the wall of the outer tube 1. The two shafts 23 are rotatably connected to the two rotating holes 11 respectively. The ends of the shafts 23 extend to the outside of the outer tube 1 and are fixedly connected to the end 24. The shafts 23 can rotate around their central axis relative to the inner wall of the outer tube 1.

[0031] The forceps flap 22 is a box-shaped container with a hollow interior. The opposite side of the two forceps flaps 22 is open. The edges of the forceps flaps 22 are provided with serrations. When the two forceps flaps 22 are relatively closed, the serrations are interlocked with each other, and the biopsy sampling tissue is accommodated inside the forceps flaps 22. The serrations on the edges of the forceps flaps 22 can quickly cut the biopsy site, thereby improving the sampling efficiency.

[0032] The swing control assembly 3 includes a U-shaped plate 31, a bent plate 32, a motor 33 fixed on the bracket 4, and a connecting shaft 34 coaxially connected to the output end of the motor 33;

[0033] The U-shaped plate 31 includes two parallel side plates 311 and a middle plate 312 connected between the two side plates 311. The two side plates 311 surround the two sides of a shaft 23 and are pivotally connected to the shaft 23 through a pin 35. The bent plate 32 includes a first connecting plate section 321 and a second connecting plate section 322. The first connecting plate section 321 is parallel to and fixedly connected to the end of the connecting shaft 34, and the second connecting plate section 322 is parallel to and rotatably connected to the outer surface of the middle plate 312 of the U-shaped plate 31. The central axis of the connecting shaft 34 is coplanar with the central axis of the shaft 23.

[0034] The motor 33 is a micro reduction motor 33, which drives the connecting shaft 34 to rotate, and the connecting shaft 34 drives the bent plate 32 to rotate, and the bent plate 32 drives the U-shaped plate 31 to rotate, and the U-shaped plate 31 drives the shaft 23 to rotate, and the shaft 23 drives the base block 21 to rotate about the central axis of the shaft 23, thereby controlling the direction of the chuck 2, making it convenient to sample the position located on the side of the front end of the outer tube 1 without twisting the outer tube 1, thereby reducing damage to the patient's body and reducing the patient's pain; in addition, in the present invention, the horizontal axis rotation of the motor 33 is changed to the vertical axis rotation of the shaft 23, which reduces the demand for vertical space when arranged in the outer tube 1, thereby reducing the diameter of the outer tube 1, reducing the size of foreign objects invading the patient's body during biopsy, and reducing the patient's discomfort.

[0035] In the present invention, a camera 5 is fixedly connected to the end of the outer tube 1 close to the chuck 2, and a display screen 6 electrically connected to the camera 5 is fixedly connected above the bracket 4. The camera 5 records the internal conditions of the patient and displays them on the display screen 6, so as to quickly locate the patient's lesions. Then, by controlling the start and stop of the motor 33, the direction of the chuck 2 can be accurately adjusted to the angle facing the lesion. After clamping, the swing control component 3 is controlled to return the chuck 2 to the right position and then remove the biopsy tissue, so as to achieve the effects of rapid positioning, accurate sampling, and painless detachment.

[0036] In this embodiment, the interior of the base block 21 is hollow, and through grooves 211 communicating with the interior are provided on both sides of the base block 21, and a sliding hole 212 communicating with the interior is provided at the inner end, and the axial direction of the sliding hole 212 is coplanar and perpendicular to the axial direction of the shaft 23;

[0037] The opening and closing control assembly 25 includes an intermediate block 251 and a traction member 256. The traction member 256 is used to drive the intermediate block 251 to move along the axial direction of the sliding hole 212.

[0038] Both sides of the middle block 251 are hinged with connecting rods 252, and the ends of the connecting rods 252 are hinged with bent rods 253. The ends of the bent rods 253 extend out of the base block 21 and are hinged with the jaws 22. The bent rods 253 are rotatably connected to the upper and lower walls of the base block 21 at their turning points through short shafts 254. The outer side of the base block 21 and the surface of the jaws 22 are also hinged to each other through strips 255. The traction member 256 drives the middle block 251 to move along the axial direction of the slide hole 212, the middle rod drives the connecting rod 252 to rotate, the connecting rod 252 drives the bent rod 253 to rotate, and the bent rod 253 drives the jaws 22 to rotate.

[0039] Among them, the back side of the forceps flap 22 has a protruding block 221 protruding outward, the end of the bent rod 253 is forked and has two fork ends 2531 hinged to the block 221 respectively; the strip 255 is also hinged to the surface of the block 221, and the hinge point between the strip 255 and the block 221 is farther away from the base block 21 than the hinge point between the fork end 2531 and the block 221. Therefore, during the rotation of the forceps flap 22, the opening and closing amplitude of the side of the forceps flap 22 close to the outer tube 1 is greater than the opening and closing amplitude of its head, so that the head of the forceps flap 22 can have a more stable clamping force when clamping the object, reducing the possibility of instability due to displacement and slippage of the clamp head 2 and the lesion during the clamping process, and a smaller opening and closing amplitude can reduce the uneven surface pressure distribution in the soft clamping sampling area and reduce the wound area.

[0040] The traction member 256 includes a sliding shaft 2561 slidably connected to the sliding hole 212. A through hole 2511 coaxial with the sliding hole 212 is opened in the middle of the middle block 251. One end of the sliding shaft 2561 extends into the through hole 2511 and the other end extends out of the base block 21. Two parallel limit plates 2562 are fixed to the outside of the sliding shaft 2561. The two limit plates 2562 are respectively in contact with the two sides of the middle block 251. When the sliding shaft 2561 extends forward or retracts along its axial direction, When moving, the limiting plates can limit the middle block 251 so that it moves axially synchronously with the sliding shaft 2561; the other end of the sliding shaft 2561 extending outside the base block 21 is fixed with a connecting end 2563, and the outer sleeve of the sliding shaft 2561 is provided with a spring 2564, and the two ends of the spring 2564 are respectively fixedly connected to the connecting end 2563 and the surface of the base block 21, and the connecting end 2563 is fixedly connected with a traction rope 2565, and the traction rope 2565 passes through the outer tube 1 to the end where the bracket 4 is located.

[0041] The bracket 4 includes a transverse arc plate 41, a fixed wrench and a grip 43. The transverse arc plate 41 is fixedly connected to the outer tube 1. The fixed handle 42 is fixed below the end of the transverse arc plate 41. The grip 43 is hinged below the middle of the transverse arc plate 41. The grip 43 is connected to the fixed handle 42 through an elastic member 44, which can be a leaf spring. The end of the traction rope 2565 is fixedly connected to the grip 43. When the fixed handle 42 is held and the grip 43 is pressed and squeezed, the grip 43 pulls the traction rope 2565, and the traction rope 2565 drives the sliding shaft 2561 to move. The sliding shaft 2561 drives the opening and closing control assembly 25 to transmit so that the clamp flap 22 opens and closes to clamp the lesion for sampling. A control switch 7 electrically connected to the motor 33 is fixed on the grip 43, so that before opening and closing the clamp, the motor 33 is controlled by the control switch 7 to rotate so that the clamp 2 is directed toward the lesion.

[0042] When in use, the outer tube 1 is inserted into the patient's body and the chuck 2 is brought close to the lesion, the control switch 7 is started, the motor 33 drives the connecting shaft 34 to rotate, the connecting shaft 34 drives the bent plate 32 to rotate, the bent plate 32 drives the U-shaped plate 31 to rotate, the U-shaped plate 31 drives the shaft rod 23 to rotate, the shaft rod 23 drives the base block 21 and the chuck 2 to rotate as a whole, and the direction of the chuck 2 is controlled to facilitate sampling at the position located on the side of the front end of the outer tube 1; the outer tube 1 is then inserted a little further to make the chuck 2 close to the lesion, the handle 43 is pinched, the handle 43 pulls the traction rope 2565, the traction rope 2565 pulls the sliding shaft 2561, the sliding shaft 2561 pulls the middle block 251, the middle block 251 drives the connecting rod 252 to rotate, the connecting rod 252 drives the bent rod 253 to rotate, the bent rod 253 drives the clamp flap 22 to rotate, and tissue sampling is clamped. The present invention can simultaneously control the left and right rotation and opening and closing of the chuck 2, and can directly clamp the lesion site located on the side of the front end without twisting the whole body, thereby achieving more flexible and accurate biopsy sampling; and the lesion on the cervix can be correctly located by fine-tuning the chuck 2, which greatly reduces the pulling and squeezing of the cervix and its surrounding tissues, and reduces the risks of postoperative bleeding, infection and scar formation.

[0043] The above-described embodiments are merely descriptions of preferred implementations of the present invention, and are not intended to limit the concept and scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements made by ordinary persons in the art to the technical solution of the present invention should fall within the protection scope of the present invention, and the technical contents for which protection is sought in the present invention have been fully recorded in the claims.

Claims

1. A cervical canal biopsy device, characterized in that: include: External pipe; A chuck is arranged at the front end of the outer tube, the chuck comprises a base block, two jaws connected to the base block that can be opened and closed to clamp biopsy tissue, two coaxial shafts respectively fixed to the upper and lower surfaces of the base block, and an opening and closing control assembly for controlling the opening and closing of the jaws, two coaxial rotation holes are relatively opened on the wall of the outer tube, the two shafts are respectively rotatably connected to the two rotation holes, the ends of the shafts extend out of the outer tube and are fixedly connected to the end heads, and the shafts rotate around the central axis relative to the inner wall of the outer tube; A swing control assembly, the swing control assembly comprising a U-shaped plate, a bent plate, a motor, and a connecting shaft coaxially connected to an output end of the motor, the U-shaped plate comprising two parallel side plates and an intermediate plate connected between the two side plates, the two side plates surround two sides of a shaft and are pivotally connected to the shaft through a pin, the bent plate comprises a first connecting plate section and a second connecting plate section, the first connecting plate section is parallel to and fixedly connected to an end of the connecting shaft, the second connecting plate section is parallel to and rotatably connected to an outer surface of the intermediate plate of the U-shaped plate, and the central axis of the connecting shaft is coplanar with the central axis of the shaft; Among them, the motor drives the connecting shaft to rotate, the connecting shaft drives the bending plate to rotate, the bending plate drives the U-shaped plate to rotate, the U-shaped plate drives the shaft to rotate, and the shaft drives the base block to rotate around the central axis of the shaft to control the direction of the chuck.

2. A cervical canal biopsy device according to claim 1, characterized in that: A bracket is fixedly connected to the other end of the outer tube relative to the clamp, and the motor is fixed on the bracket.

3. A cervical canal biopsy device according to claim 2, characterized in that: The interior of the base block is hollow, and through grooves connected to the interior are provided on both sides of the base block, and a sliding hole connected to the interior is provided on the inner end, and the axial direction of the sliding hole is coplanar and perpendicular to the axial direction of the shaft rod; the opening and closing control component includes an intermediate block and a traction member for driving the intermediate block to move along the axial direction of the sliding hole, and connecting rods are hinged on both sides of the intermediate block, and bent rods are hinged at the ends of the connecting rods, and the ends of the bent rods extend out of the base block and are hinged to the jaws, and the bent rods are rotatably connected to the upper and lower walls of the base block at their turning points through short axes, and the outer side of the base block and the surface of the jaws are also hinged to each other through strips.

4. A cervical canal biopsy device according to claim 3, characterized in that: The traction member includes a sliding shaft slidably connected to the sliding hole, a through hole coaxial with the sliding hole is opened in the middle of the intermediate block, one end of the sliding shaft extends into the through hole, and the other end extends out of the base block, and two parallel limit plates are fixed to the outside of the sliding shaft, and the two limit plates are respectively in contact with the two sides of the intermediate block so that the intermediate block can move axially synchronously with the sliding shaft; a connecting end is fixed to the other end of the sliding shaft extending out of the base block, and a spring is arranged outside the sliding shaft, and the two ends of the spring are respectively fixedly connected to the connecting end and the surface of the base block, and the connecting end is fixedly connected to a traction rope, and the traction rope passes through the outer tube to the end where the bracket is located.

5. A cervical canal biopsy device according to claim 4, characterized in that: The bracket includes a transverse arc plate fixedly connected to the outer tube, a fixed handle fixed below the end of the transverse arc plate, and a grip hinged below the middle of the transverse arc plate. The grip and the fixed handle are connected by an elastic member, and the elastic member is a leaf spring. The end of the traction rope is fixedly connected to the grip.

6. A cervical canal biopsy device according to any one of claims 2 to 5, characterized in that: A camera is fixedly connected to the end of the outer tube close to the clamp, and a display screen electrically connected to the camera is fixedly connected above the bracket.

7. The cervical canal biopsy device according to claim 5, characterized in that: A control switch electrically connected to the motor is fixed on the handle, and the motor is a micro reduction motor.

8. A cervical canal biopsy device according to claim 3 or 4, characterized in that: The back of the clamp flap has a protruding block protruding outward, the end of the bent rod is forked and has two fork ends respectively hinged to the protrusion; the strip is also hinged to the surface of the protrusion, and the hinge point between the strip and the protrusion is farther away from the base block than the hinge point between the fork end and the protrusion.

9. A cervical canal biopsy device according to any one of claims 1 to 5, characterized in that: The jaws are box-shaped containers with a hollow interior. The opposite sides of the two jaws are open. The edges of the jaws are provided with serrations, and when the two jaws are relatively closed, the serrations are interlocked.

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