An in vivo tissue sampler

Abstract

The technical scheme provided by the application is an in-vivo tissue sampler, and belongs to the technical field of medical devices. The sampler comprises an inner core and a probe rod. A control mechanism for driving the inner core is arranged on the rear handle of the probe rod. The control mechanism comprises a control handle. The control handle can be moved to three positions. When the control handle is in the first position, the cutter head part of the inner core is completely closed with the probe rod opening part, and is in a completely closed state. When the control handle is in the second position, the control handle is moved to the end of the moving groove, the end of the handle forms a vertical line with the handle opening, the front end of the inner core is completely retracted into the probe rod, and is in a completely retracted state. When the control handle is in the third position, the end of the handle is pressed to extrude the limiting rod on the handle out of the limiting groove on the handle, the handle is moved forward, and because the rotating groove on the rotating part is limited by the limiting column on the handle, the cutter head is quickly rotated forward, and is in a state of rotating forward and reaching the completely closed state. The in-vivo tissue sampler can realize in-vivo sampling and remove polyps, and is easy to operate.

Description

TECHNICAL FIELD

[0001] The present application relates to an in-vivo tissue sampling device, belonging to the field of medical apparatus. BACKGROUND

[0002] Surgery has become more and more minimally invasive and precise, and endoscopic surgery allows surgeons to reach the surgical site through a small opening, causing little damage and quick postoperative recovery. Endoscopy can be used for surgical procedures that require in-vivo tissue sampling.

[0003] The existing in-vivo tissue sampler needs to be used in combination with other tools for surgery.

[0004] Possible problems with these tools include: it is difficult for surgeons to operate when taking out some tissues from specific parts; the kinetic energy of the cutting head is not sufficient, resulting in the need for multiple operations to remove the tissue; the opening is too large during the operation, or causes additional unnecessary damage; the use is complex, the operation time is long, the cost is high, and the shape and length are not reasonably designed. SUMMARY

[0005] The technical problem to be solved by the present application is to provide an in-vivo tissue sampler that can extract in-vivo tissue in a minimally invasive environment and is easy to operate.

[0006] To solve the above technical problems, the technical solutions of the present application are as follows:

[0007] An in-vivo tissue sampler, comprising an inner core and a probe rod, a control mechanism for driving the inner core is arranged on the rear handle of the probe rod, wherein:

[0008] The control mechanism comprises a control handle, the control handle can be moved to three positions, when the control handle is in the first position, the cutting head part of the inner core is completely closed with the opening part of the probe rod, in the completely closed state; when the control handle is in the second position, the control handle is moved to the end of the moving groove, the end of the handle forms a vertical line with the opening of the handle, the front end of the inner core is completely retracted into the probe rod, in the completely retracted state; when the control handle is in the third position, press the end of the handle to extrude the limiting rod on the handle out of the limiting groove on the handle, the handle will move forward, and because the rotating groove on the rotating part is limited by the limiting column on the handle, the cutting head is quickly rotated forward, in the state of rotating forward and reaching the completely closed state at the same time; wherein the anti-rotation device locks the handle and the probe rod during the operation of the device through the anti-rotation protrusion and the matching groove, preventing them from moving with the inner core, and the rotating part and the spring are fixed through the rotating part clamping groove and the spring clamping groove on the control handle, wherein the rotating part clamping groove cooperates with the fixed groove on the rotating part to ensure that they move synchronously in the horizontal direction;

[0009] Further, the inner core and the cutter head part and the whole part of the probe rod, including the part combined with the anti-rotation device on the probe rod. Wherein the outer diameter of the inner core is smaller than the outer diameter of the probe rod;

[0010] Further, the control mechanism includes a handle with a control handle mounting hole, an anti-rotation slot of the negative pressure connecting device, and a limiting hole;

[0011] Further, the handle has a control handle moving slot and a control handle limiting slot;

[0012] Further, the control handle has a rotating part clamping slot for connecting the rotating part and a spring clamping slot for connecting the spring;

[0013] Further, the inner core has a spring limiting slot, the top of the probe rod is provided with a long slot, and the tail of the probe rod is provided with a flat cylinder fixed to the head of the handle;

[0014] Further, the anti-rotation device is provided with an anti-rotation protrusion matched with the protruding part of the handle and a matching slot matched with the flat part of the probe rod;

[0015] Further, the cutter head part has a 60° chamfer, and in addition, the cutter head has two designs, one is a flat cutter type and the other is a sawtooth type;

[0016] Further, the handle is provided with a matching anti-rotation device protruding ball and a beam for fixing the inner core;

[0017] Further, the rotating part clamping slot (41) and the spring clamping slot (42) on the control handle (4) are fixed, and the rotating part clamping slot (41) is matched with the fixed slot (52) on the rotating part (5);

[0018] Further, the baffle (11) on the inner core is in contact with one end of the spring (3), and the other end of the spring (3) is clamped in the spring clamping slot (42) of the control handle (4);

[0019] Further, the negative pressure connecting device (7) is fixed through the negative pressure part slot (63) at the tail of the handle (6).

[0020] The present application has the following beneficial effects:

[0021] There are two cutter heads that can meet the needs of different parts of the body; through the device, the cutter head can obtain sufficient power, and the tissue can be completely removed at one time; the head of the probe rod is very small, and will not cause unnecessary damage to soft tissue during surgery; the operation is simple, the structure is simple, not easy to damage, easy to popularize and other characteristics. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a schematic diagram of the overall structure of the device of the present application;

[0023] Figure 2 is the schematic diagram of each part of the device after disassembly of the present application;

[0024] Figure 3 is the schematic diagram of the control handle of the device of the present application;

[0025] Figure 4 is the schematic diagram of the rotating part of the device of the present application;

[0026] Figure 5 is the schematic diagram of the handle of the device of the present application;

[0027] Figure 6 is the schematic diagram of the negative pressure connecting device of the device of the present application;

[0028] Figure 7 is the schematic diagram of the anti-rotation device of the device of the present application;

[0029] Figure 8 is the schematic diagram of the force application movement and the overall cross-sectional view of the device of the present application;

[0030] Figure 9 is the schematic diagram of the process of the knife head part intercepting tissue of the device of the present application;

[0031] Figure 10 is the schematic diagram of another knife head part.

[0032] Reference signs: 1, inner core; 11, baffle; 12, knife head; 2, probe rod; 3, spring; 4, control handle; 41, rotating part clamping groove; 42, spring clamping groove; 5, rotating part; 51, rotating groove; 52, fixed groove; 6, handle; 61, moving groove; 62, limiting groove; 63, negative pressure part groove; 7, negative pressure connecting device; 8, anti-rotation device; 81, anti-rotation protrusion; 82, matching groove. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described examples are only some of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0034] Please refer to Figures 1 to 7An in-vivo tissue sampler, comprising an inner core 1 and a probe rod 2, a control mechanism for driving the inner core 1 is arranged on the rear handle 6 of the probe rod 2, the control mechanism comprises a control handle 4, the control handle 4 can be moved to three positions, when the control handle 4 is in the first position, the cutter head 12 of the inner core 1 is fully closed with the hole part of the probe rod 2, in the fully closed state; when the control handle 4 is in the second position, the control handle 4 is moved to the end of the moving groove 61, the end of the handle forms a vertical line with the hole of the handle 6, the front end of the inner core 1 is fully retracted into the probe rod 2, at this time the spring 3 is fully compressed by the baffle 11 on the inner core, in the fully retracted state; when the control handle 4 is in the third position, the end of the handle is pressed to extrude the limiting rod on the handle out of the limiting groove 62 on the handle 6, the handle will move forward, and because the rotating groove 51 on the rotating part 5 is limited by the limiting column on the handle 6, the cutter head 12 is quickly rotated forward, in the state of rotating forward and reaching the fully closed state at the same time; wherein during the operation of the device, the anti-rotation device 8 locks the handle 6 and the probe rod 2 through the anti-rotation protrusion 81 and the matching groove 82 to prevent them from moving with the inner core 1, and the rotating part 5 and the spring 3 are fixed through the rotating part clamping groove 41 and the spring clamping groove 42 on the control handle 4, wherein the rotating part clamping groove 41 cooperates with the fixed groove 52 on the rotating part 5 to ensure that they move synchronously in the horizontal direction.

[0035] Before the operation, the device is assembled according to the above method, and a hospital special negative pressure device is connected to the negative pressure connecting device 7.

[0036] During the operation, the equipment is inserted into the body, and according to Figures 8 to 9 , the equipment is assembled, and the doctor needs to pull the control handle 4 first, so that the limiting device on the control handle enters the limiting groove 62 in the handle 6, at this time the control handle 4 is pulled backward, the control handle cannot move backward, and reaches Figure 8 , at this time the spring 3 is compressed to the limit. The cutter head moves backward to reach the second position in Figure 9 . Then the tissue is put into the groove of the probe rod 2 by using an endoscope, the protruding button at the rear of the control handle 4 is pressed, the limiting device on the control handle 4 is extruded out of the limiting groove 62 in the handle 6, the spring 3 is released, the device obtains the power of forward rush without limitation, the cutter head rotates forward to cut the tissue, which falls down by the suction force of the negative pressure device, to reach the fourth position in Figure 9 . Thus the operation is completed.

[0037] After the operation, the doctor only needs to pull off the negative pressure device, the tissue is collected in the negative pressure connecting position 7, and the tissue can be taken out from the device for inspection.

[0038] While embodiments of the application have been shown and described, it is to be understood that the application is not limited to the details of the embodiments described, since numerous changes, modifications, substitutions and alterations can be made thereto without departing from the spirit and scope of the application as defined by the appended claims and their equivalents.

Claims

1. An in vivo tissue sampler, comprising an inner core (1) and a probe (2), wherein a control mechanism for driving the inner core (1) is provided on a rear handle (6) of the probe (2), and characterized in that: The handle (6) is provided with a control handle moving groove (61) and a control handle limiting groove (62); The control handle (4) is provided with a rotating component clamping slot (41) for controlling and connecting the rotating component (5) and a spring clamping slot (42) for connecting the spring (3); The control mechanism includes a control handle (4), which can be moved to three positions. When the control handle (4) is in the first position, the blade head (12) of the inner core (1) is completely closed with the opening of the probe rod (2), and is in a completely closed state; when the control handle (4) is in the second position, the control handle (4) moves backward to the end of the moving groove (61), the end of the handle and the opening of the handle (6) form a vertical line, and the front end of the inner core (1) is completely retracted into the probe rod (2), and is in a completely retracted state; when the control handle (4) is in the third position, the end of the handle is pressed to squeeze the handle upper limit rod out of the handle upper limit groove (62), and the handle will move forward. The rotating groove (51) on the rotating component (5) is limited by the limiting column on the handle (6), driving the cutter head (12) to rotate forward quickly, and at the same time reaching a fully closed state while being in the state of rotating forward; wherein during the operation of the device, the anti-rotation device (8) locks the handle (6) and the probe rod (2) through the anti-rotation protrusion (81) and the matching groove (82), preventing them from moving with the movement of the inner core (1), and the rotating component (5) and the spring (3) are fixed by the rotating component clamping groove (41) and the spring clamping groove (42) on the control handle (4), wherein the rotating component clamping groove (41) cooperates with the fixed groove (52) on the rotating component (5) to ensure that they move synchronously in the horizontal direction.

2. The in vivo tissue sampler according to claim 1, characterized in that: The inner core (1) and the cutter head (12) and the entire probe rod (2) include a portion on the probe rod (2) combined with the anti-rotation device (8), wherein the outer diameter of the inner core (1) is smaller than the outer diameter of the probe rod (2).

3. The in vivo tissue sampler according to claim 1, characterized in that: The control mechanism includes a handle (6) provided with a control handle (4) mounting hole, and a negative pressure connection device (7) anti-rotation groove and a limiting hole.

4. The in vivo tissue sampler according to claim 3, characterized in that: A baffle (11) is provided on the inner core (1), a long groove is provided on the top of the probe rod (2), and a flat cylinder is provided at the tail of the probe rod (2) and fixed to the head of the handle (6).

5. The in vivo tissue sampler according to claim 4, characterized in that: The anti-rotation device (8) has an anti-rotation protrusion (81) that matches with the protruding portion of the handle (6), and a matching groove (82) that matches with the flat portion on the probe rod (2).

6. The in vivo tissue sampler according to claim 1, characterized in that: The cutter head (12) has a 60° chamfer. In addition, the cutter head (12) has two designs, one of which is a flat blade type and the other is a serrated type.

7. The in vivo tissue sampler according to claim 1, characterized in that: The handle (6) is provided with a raised ball that matches the anti-rotation device (8) and a beam that fixes the inner core (1).

8. The in vivo tissue sampler according to claim 7, characterized in that: The rotating component clamping groove (41) and the spring clamping groove (42) on the control handle (4) are fixed, and the rotating component clamping groove (41) cooperates with the fixed groove (52) on the rotating component (5).

9. The in vivo tissue sampler according to claim 7, characterized in that: The inner core upper baffle (11) contacts one end of the spring (3); the other end of the spring (3) is clamped in the spring clamping groove (42) of the control handle (4).

10. The in vivo tissue sampler according to claim 9, characterized in that: The negative pressure connection device (7) is fixed through the negative pressure component groove (63) at the tail of the handle (6).

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