Minimally invasive sampling forceps

Abstract

The utility model relates to the field of medical instruments, in particular to a pair of minimally invasive sampling forceps. The side face of the main body is rotationally sleeved with a power component, and the power component comprises a spiral driving groove; one end of the driven part is located in the spiral driving groove, the other end of the driven part penetrates through the main body and is connected with the clamping head, so that the power part drives the driven part to move when rotating and controls the size of an opening of the clamping head, and the driven part comprises a driven part, a mounting plate and a driven rod; the driven piece and the driven rod are fixedly arranged on the two faces, away from and close to the clamping head, of the mounting plate correspondingly, and the end of the driven piece makes contact with the bottom of the spiral driving groove. And the driven rod is connected with the clamping head. According to the minimally invasive sampling forceps provided by the utility model, the distance between the clamping head of the sampling forceps and the sampling position of a patient can be conveniently controlled, the contact area of the sampling position of the patient can be conveniently controlled, and the serious sampling wound of the patient is avoided.

Description

Technical Field

[0001] This utility model relates to the field of medical devices, specifically to surgical forceps used in miniature invasive surgery. Background Technology

[0002] Sampling forceps are medical devices used to collect samples of certain tissues, cells, or tumors from the human body for observation and pathological examination. There are many types of sampling forceps, which are widely used in the medical field, such as gastrointestinal endoscopes, pulmonary endoscopes, hysteroscopes, and nasal endoscopes. Sampling forceps with different structures have their own functions and uses. Sampling forceps include a gripping head and a power component that drives the gripping head to work. During operation, the movement of the power component generates a pushing or pulling force on the gripping head, thereby causing the gripping head to move. When the gripping head moves, it can drive the two scissor-shaped connected clamping parts to move, ultimately achieving the steps of clamping and releasing.

[0003] Currently, the sampling forceps commonly used still rely on the pushing force of the hand to operate the pushing component. Operators often use excessive force, causing the sampling forceps to be subjected to excessive force and have too large a contact area with the patient's sampling site, resulting in greater trauma to the patient during sampling.

[0004] Therefore, how to solve the technical problem of the large trauma caused to patients by sampling forceps is a problem that urgently needs to be solved by those skilled in the art.

[0005] It should be noted that the information disclosed in this background section is only for understanding the background technology of this application concept, and therefore may include information that does not constitute prior art. Utility Model Content

[0006] The purpose of this invention is to provide a minimally invasive sampling forceps to solve the above problems.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A minimally invasive sampling forceps, comprising:

[0009] Gripper head;

[0010] The main body has a power component rotatably mounted on its side, wherein the power component includes a spiral drive groove;

[0011] The driven component has one end located in the spiral drive groove and the other end passing through the main body and connected to the gripping head, so that when the power component rotates, it drives the driven component to move and controls the size of the gripping head opening.

[0012] In one optional embodiment, the driven component includes a driven member, a mounting plate, and a driven rod;

[0013] The driven member and the driven rod are respectively fixed on two sides of the mounting plate away from and near the gripping head. The end of the driven member contacts the bottom of the helical drive groove. The driven rod is connected to the gripping head and is used to control the movement of the driven rod in the length direction of the main body when the power component rotates.

[0014] In one optional embodiment, the power component is rotatably connected to the main body via a protrusion on the main body, and the other end of the power component 4 is fixedly connected to the rear end, so as to drive the power component to rotate on the main body through the rear end.

[0015] The power component includes a power element, which is fixedly connected to the frame portion of the power component.

[0016] In one alternative embodiment, the helical drive groove is formed on the side of the power component facing the mounting plate;

[0017] The power component is also provided with a cylindrical tubular guide groove;

[0018] The spiral drive groove and guide groove are concentric, used to drive the driven rod to move along the length of the main body when the power component rotates.

[0019] In one optional embodiment, the helical drive groove is provided with a through groove facing the driven component;

[0020] The cross-sectional dimension of the through groove is smaller than that of the helical drive groove, so as to avoid interference between the driven member and the power member 41 when the helical drive groove rotates;

[0021] The center of the guide groove corresponds to the position of the spiral drive groove.

[0022] In one alternative embodiment, a guide rod is fixed to the surface of the mounting plate away from the driven rod, and the guide rod is inserted into a guide groove.

[0023] In one alternative embodiment, the driven rod is fixed in the middle of the mounting plate and passes through the mounting tube and the mounting component;

[0024] The driven member and the guide rod are located at the two ends of the mounting plate, respectively. The distance between the driven member and the driven rod 54 is greater than the distance between the driven rod and the guide rod, so that when the guide rod rotates in the annular guide groove and the driven member rotates in the helical drive groove, it drives the driven rod to move in the length direction of the main body.

[0025] In one alternative embodiment, the mounting plate is located between the limiting groove of the power component and the main body, and is separate from both.

[0026] The driven rod is made of rigid material, and a cover plate for pressing the installation tube is provided at the limiting groove of the main body.

[0027] In one optional embodiment, a mounting tube is fixed between the body and the gripping head;

[0028] The mounting tube is separated from the driven rod.

[0029] The beneficial effects of this utility model are as follows: It provides a minimally invasive sampling forceps, which, through the cooperation of the gripping head, mounting parts, main body and rear end, creates a rotary operating power component sampling forceps to replace the sampling forceps that require the operator to provide pushing force. This achieves the effect of the operator using rotational force to operate the sampling forceps during use, making it easier to control the distance between the gripping head of the sampling forceps and the patient's sampling site, making it easier to control the contact area of ​​the patient's sampling site, and avoiding greater trauma to the patient during sampling. Attached Figure Description

[0030] Figure 1 An isometric view of the overall structure of the existing sampling clamp.

[0031] Figure 2 This is a schematic diagram of the overall structure of the minimally invasive sampling forceps provided in an embodiment of this utility model.

[0032] Figure 3 This is a partial structural diagram of the minimally invasive sampling forceps provided in an embodiment of this utility model.

[0033] Figure 4 for Figure 3 A magnified view of part A in the middle.

[0034] Figure 5 This is a schematic diagram of another part of the structure of the minimally invasive sampling forceps provided in the embodiments of this utility model.

[0035] Figure 6 This is a schematic diagram of another part of the structure of the minimally invasive sampling forceps provided in the embodiment of this utility model.

[0036] Figure 7 This is a schematic diagram of the gripping head of the minimally invasive sampling forceps provided in an embodiment of this utility model.

[0037] Figure 8 This is a schematic diagram of the guide groove and spiral drive groove of the power component of the minimally invasive sampling forceps provided in the embodiments of this utility model.

[0038] Figure 9 This is a schematic diagram from another angle of the guide groove and spiral drive groove of the power component of the minimally invasive sampling forceps provided in an embodiment of this utility model.

[0039] In the diagram: 1. Gripping head; 11. Mounting component; 2. Mounting tube; 3. Main body; 31. Cover plate; 32. Limiting groove; 33. Rear end; 4. Power component; 41. Power component; 42. Screw drive groove; 421. Through groove; 43. Guide groove; 5. Driven component; 51. Driven component; 52. Mounting plate; 53. Guide rod; 54. Driven rod. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this utility model.

[0041] Because the operator needs to push the pusher when using the sampling forceps, and because the warning force between the power component and the main body of each sampling forceps is different, or because the warning force between the power component and the main body changes when the forceps come into contact with liquid during use, the operator cannot determine the magnitude of the warning force. If the operator uses too much pushing force during use, the contact area between the sampling forceps and the patient's sampling site will be large, resulting in a large wound area at the patient's sampling site.

[0042] refer to Figures 1 to 4 The minimally invasive sampling forceps includes a gripping head 1, a mounting component 11, a mounting tube 2, a main body 3, and a rear end 33. The gripping head 1 is connected to the mounting tube 2 via the mounting component 11, providing a mounting position for the gripping head 1. The mounting tube 2 is partially located within the main body 3. The rear end 33 is movably connected to the main body 3 via a power component 4. The power component 4 is connected to the gripping head 1 via a driven component 5, ensuring that the gripping head 1 can be driven to work via the driven rod 54 when the power component 4 rotates. (Reference) Figures 4 to 6 The main body 3 is provided with a limiting groove 32, and the mounting tube 2 is located in the limiting groove 32 to provide the mounting position of the mounting tube 2; the power component 4 is fitted on the outside of the main body 3, and the power component 4 is provided with a power element 41 to drive the driven component 51 to move when rotating. The power element 41 is connected to the driven component 5; the driven component 5 passes through the mounting component 11 and the mounting tube 2, and the driven component 5 includes a driven rod 54, a mounting plate 52, a guide rod 53 and the driven component 51.

[0043] The power component 4 is movably connected to the main body 3 via a protrusion on the main body 3 to ensure that the power component 4 can rotate along the main body 3. The other end of the power component 4 is fixedly connected to the rear end 33 to ensure that the two move synchronously. The power element 41 is fixedly connected to the frame part of the power component 4.

[0044] The power component 4 is provided with a hollow part to avoid interference with the power component 41. The power component 41 is provided with a spiral drive groove 42 and a guide groove 43, which are both corresponding to the position of the driven component 5. The power component 41 is located inside the hollow part.

[0045] refer to Figure 6 The spiral drive groove 42 is spirally distributed along the length of the power member 41 to ensure that the driven member 51 can be driven to move along a spiral trajectory. The cross-section of the guide groove 43 is annular.

[0046] The helical drive groove 42 is provided with a through groove facing the driven member 5, which serves as a channel for the upper part of the driven member 51 to avoid interference between the upper part of the driven member 51 and the power member 41. The cross-sectional size of the through groove is smaller than that of the helical drive groove 42 to ensure that the end of the driven member 51 is located in the helical drive groove 42. The connecting post of the driven member 51 is located in the through groove, and the center of the guide groove 43 corresponds to the position of the helical drive groove 42.

[0047] refer to Figures 8 to 9 The driven rod 54 is fixed in the middle of the mounting plate 52 and passes through the mounting tube 2 and the mounting component 11; the driven member 51 and the guide rod 53 are located at the two ends of the mounting plate 52 respectively, wherein the distance between the driven member 51 and the driven rod 54 is greater than the distance between the driven rod 54 and the guide rod 53, so that when the guide rod 53 rotates in the annular guide groove 43 and the driven member 51 rotates in the spiral drive groove 42, it drives the driven rod 54 to move in the length direction of the main body 3.

[0048] refer to Figures 4 to 7 One end of the driven rod 54 is connected to the guide rod 53 and the driven member 51 through the mounting plate 52, and the other end of the driven rod 54 is connected to the gripping head 1. This is to ensure that when the end of the driven member 51 moves spirally in the power member 41, it can drive the guide rod 53 to rotate in the guide groove 43, and at the same time drive the driven rod 54 to move in the length direction of the main body 3, so as to provide power for the gripping head 1 to work.

[0049] Driven rod 54 passes through mounting tube 2 and mounting component 11, guide rod 53 is located in guide groove 43, and driven component 51 is located in helical drive groove 42.

[0050] The follower 51 includes a connecting post and an end. The end is fixedly connected to the mounting plate 52 via the connecting post. Specifically, the end is spherical and located within the helical drive groove 42. The connecting post passes through the groove 421 to ensure that the follower 51 can rotate normally within the helical drive groove 42. The follower 51 is preferably a steel wire.

[0051] The mounting plate 52 is located between the power component 41 and the limiting groove 32 of the main body 3, and is separate from both of them; the driven rod 54 is made of rigid material to ensure that it can provide pulling and pushing force to the clamping head 1; the limiting groove 32 of the main body 3 is provided with a cover plate 31 for pressing the mounting tube 2, which cooperates to limit the mounting tube 2.

[0052] The working principle of this utility model is as follows: Before using the minimally invasive sampling forceps, the forceps are removed, and then medical personnel rotate the power component 4 through the rear end 33. During this process, the power component 4 rotates on the main body 3, and the power component 41 rotates relative to the driven component 5. During this process, the end of the driven component 51 moves within the spiral-shaped spiral drive groove 42. Since the trajectory of the spiral drive groove 42 is spiral, the spiral drive groove 42 can push the end of the driven component 51 to move along the spiral trajectory. During the process, the driven member 51 drives the mounting plate 52 to rotate while moving along the length of the main body 3. At the same time, the guide rod 53 rotates in the guide groove 43, thereby causing the mounting plate 52 to drive the driven rod 54 to move along the length of the main body 3. During this process, the driven rod 54 pulls the clamping head 1 to work. That is, under the pulling and pushing of the driven rod 54, the clamping head 1 clamps and releases, thereby completing the sampling of the corresponding tissue of the patient and releasing the sampled patient tissue. After the sampling is completed, the sampling forceps is cleaned and placed in the required location for storage.

[0053] The above embodiments are used to further illustrate the present invention, but do not limit the present invention to these specific embodiments. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be understood as being within the protection scope of the present invention.

Claims

1. A minimally invasive sampling forceps, characterized in that, include: Gripper head (1); The main body (3) has a power component (4) rotatably mounted on its side, wherein the power component (4) includes a spiral drive groove (42); The driven component (5) has one end located in the spiral drive groove (42) and the other end passing through the main body (3) and connected to the gripper head (1) so that when the power component (4) rotates, it drives the driven component (5) to move and controls the size of the opening of the gripper head (1).

2. The minimally invasive sampling forceps according to claim 1, characterized in that: The driven component (5) includes a driven member (51), a mounting plate (52), and a driven rod (54). The driven member (51) and the driven rod (54) are respectively fixed on two sides of the mounting plate (52) away from and near the gripping head (1). The end of the driven member (51) is in contact with the bottom of the helical drive groove (42). The driven rod (54) is connected to the gripping head (1) to control the movement of the driven rod (54) in the length direction of the main body (3) when the power component (4) rotates.

3. The minimally invasive sampling forceps according to claim 1, characterized in that: The power component (4) is rotatably connected to the main body (3) through a protrusion on the main body (3), and the other end of the power component (4) is fixedly connected to the rear end (33) so as to drive the power component (4) to rotate on the main body (3) through the rear end (33); The power component (4) includes a power element (41), which is fixedly connected to the frame portion of the power component (4).

4. The minimally invasive sampling forceps according to claim 1, characterized in that: The spiral drive groove (42) is formed on the side of the power component (41) facing the mounting plate (52); The power component (41) is also provided with a guide groove (43); The spiral drive groove (42) and guide groove (43) are concentric and are used to drive the driven rod (54) to move along the length of the main body (3) when the power member (41) rotates.

5. The minimally invasive sampling forceps according to claim 4, characterized in that: The spiral drive groove (42) is provided with a through groove (421) facing the driven component (5); The cross-sectional dimension of the through groove (421) is smaller than that of the helical drive groove (42) to avoid interference between the driven member (51) and the power member (41) when the helical drive groove (42) rotates; The center of the guide groove (43) corresponds to the position of the spiral drive groove (42).

6. The minimally invasive sampling forceps according to claim 2, characterized in that: The mounting plate (52) has a guide rod (53) fixed on the surface away from the driven rod (54), and the guide rod (53) is inserted into the guide groove (43).

7. The minimally invasive sampling forceps according to claim 2, characterized in that: The driven rod (54) is fixed in the middle of the mounting plate (52) and passes through the mounting tube (2) and the mounting component (11). The driven member (51) and the guide rod (53) are located at the two ends of the mounting plate (52), respectively. The distance between the driven member (51) and the driven rod (54) is greater than the distance between the driven rod (54) and the guide rod (53), so that the guide rod (53) rotates in the guide groove (43) and the driven member (51) rotates in the helical drive groove (42), thereby driving the driven rod (54) to move in the length direction of the main body (3).

8. The minimally invasive sampling forceps according to claim 7, characterized in that: The mounting plate (52) is located between the power component (41) and the limiting groove (32) of the main body (3), and is separate from both of them; The driven rod (54) is made of rigid material, and a cover plate (31) for pressing the mounting tube (2) is provided at the limiting groove (32) of the main body (3).

9. The minimally invasive sampling forceps according to claim 1, characterized in that: An installation tube (2) is fixed between the main body (3) and the clamping head (1); The mounting tube (2) is separated from the driven rod (54).

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