Quick connector assembly of endoscope instrument and endoscope instrument thereof

Abstract

The utility model relates to the technical field of medical instruments, and discloses a quick connector assembly of an endoscope instrument and the endoscope instrument, the quick connector assembly comprises a handle connector and a tool bit connector, the handle connector and the tool bit connector are coaxially installed, the handle connector is provided with an insertion channel, the insertion channel is provided with a pipeline insertion opening and a locking groove, the pipeline insertion opening is provided with a locking block, and the locking groove is provided with a locking groove. The periphery of the handle joint is connected with an elastic lock pin, one end of the elastic lock pin is connected to the locking block, the handle joint is provided with a clamping port, and the clamping port is communicated with the locking groove; the periphery of the tool bit connector protrudes to form a clamping and locking block, and a clamping through groove is formed in the peripheral face of the clamping and locking block. One end of the tool bit connector is inserted into the insertion channel through the pipeline insertion opening, the clamping and locking block enters the locking groove through the pipeline insertion opening, the tool bit connector is rotated, the clamping and locking block makes contact with the elastic lock pin through the clamping opening, and the elastic lock pin is clamped to the clamping through groove. According to the quick connector assembly of the endoscope instrument and the endoscope instrument, the replacement and assembly operation of the tool bit is simplified, and the replacement convenience of the tool bit is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a quick connector assembly of a laparoscope instrument and the laparoscope instrument. Background Art

[0002] Currently, instruments in endoscopic surgical systems are operated through the working channel of an endoscope to separate tissues during treatment. Due to limitations in operating space and position, instruments with different blades must be replaced during the procedure. Existing blade replacement and assembly procedures are cumbersome, making blade replacement inconvenient. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. The utility model provides a quick connector assembly for a laparoscopic instrument and the laparoscopic instrument thereof, which simplifies the replacement and assembly operation of the blade head and improves the convenience of blade head replacement.

[0004] In order to achieve the above-mentioned purpose, the utility model provides a quick connector assembly of a laparoscopic instrument, comprising a handle connector and a tool head connector, wherein the handle connector is coaxially installed with the tool head connector, one end of the handle connector is provided with a plug-in channel, the plug-in channel is provided with a pipeline socket and a locking groove that are sequentially connected along the axial direction, a locking block is provided on one side of the circumference of the pipeline socket, an elastic locking pin is connected to the outer periphery of the handle connector, one end of the elastic locking pin is connected to the locking block, the handle connector is provided with a card interface arranged at a position corresponding to the elastic locking pin, and the card interface is connected to the locking groove;

[0005] The outer periphery of the cutter head connector is protruded to form a locking block, and the outer periphery of the locking block is provided with a locking groove;

[0006] One end of the cutter head connector is inserted into the plug-in channel through the pipeline socket, and the locking block enters the locking groove through the pipeline socket. The cutter head connector is rotated, and the locking block contacts the elastic locking pin through the card interface, and the elastic locking pin is locked in the card connection groove.

[0007] As a preferred solution, a first limiting surface is provided on a side of the locking block facing the locking block, and a second limiting surface is provided on a side of the locking block facing the locking block, and the first limiting surface is in contact with the second limiting surface.

[0008] As a preferred solution, the locking block includes a first locking block and a second locking block connected to the outer peripheral surface of the cutter head joint, the locking groove is opened on the first locking block, and the first limiting surface is set on the second locking block. The locking block includes a first locking block and a second locking block, one end of the first locking block and the second locking block are respectively connected to the plug-in channel, and the other end protrudes radially from the inner wall of the plug-in channel, the elastic locking pin is connected to the first locking block, and the second limiting surface is set on the second locking block.

[0009] As a preferred solution, the first locking block and the second locking block are arranged opposite to each other on the outer peripheral surface of the tool head connector, and the first locking block and the second locking block are connected opposite to each other on the inner wall of the insertion channel.

[0010] As a preferred solution, the outer peripheral surface of the handle joint is provided with an axially extending avoidance groove, the position of the avoidance groove is set corresponding to the position of the locking block, the elastic locking pin is installed in the avoidance groove, and the axial projection of the elastic locking pin is located within the axial projection of the locking block.

[0011] As a preferred solution, the locking block is connected to the outer periphery of the cutter head connector to form a locking section, and the shape of the pipeline socket is set to correspond to the shape of the outer periphery of the locking section.

[0012] As a preferred embodiment, the tool head connector also includes an insertion section, one end of the insertion section is connected to the locking section, the insertion section is connected to the plug-in channel, the locking section is connected to the locking groove, and the diameter of the end of the insertion section away from the locking section is smaller than the minimum diameter of the locking section.

[0013] As a preferred solution, a sealing ring groove is provided on the outer circumference of the insertion section, a sealing ring is connected in the sealing ring groove, and the outer circumference of the sealing ring is in contact with the inner wall of the insertion channel.

[0014] As a preferred solution, the handle joint is provided with a pipe connection channel connected to the plug-in channel, and the cutter head joint is provided with a liquid supply channel. When the cutter head joint is installed in the plug-in channel, the pipe connection channel is connected to the liquid supply channel.

[0015] A laparoscopic instrument comprises a handle, a blade head and a quick connector assembly of the laparoscopic instrument, wherein the handle connector is connected to one end of the handle facing the blade head, and the blade head connector is connected to one end of the blade head facing the handle.

[0016] Compared with the prior art, the quick connector assembly of a laparoscopic instrument and the laparoscopic instrument of the present invention have the following beneficial effects: when the handle connector is connected to the blade head connector, the blade head connector is inserted into the plug-in channel through the pipe socket to achieve connection. Afterwards, the locking block enters the locking groove through the pipe socket, and the blade head connector is rotated. Since only one end of the elastic locking pin is connected to the locking block and the other end is a free movable end, when the locking block contacts the elastic locking pin through the card interface, it only needs to be slightly forced to continue rotating around the axial direction, and the elastic locking pin can be engaged with the card connection groove to prevent the handle connector and the blade head connector from rotating relative to each other around the axial direction, thereby achieving circumferential connection limitation of the handle connector and the blade head connector, and simple assembly operation. At the same time, the cooperation between the locking block and the locking block also achieves axial limitation of the handle connector and the blade head connector, thereby ensuring the stability of the connection position of the handle connector and the blade head connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present utility model.

[0018] Figure 2 It is a structural schematic diagram of the cutter head joint of an embodiment of the present utility model.

[0019] Figure 3 This is an embodiment of the utility model Figure 2 Schematic diagram of the enlarged structure at A in FIG.

[0020] Figure 4 It is a structural schematic diagram of the handle joint of an embodiment of the present utility model.

[0021] Figure 5 It is a cross-sectional view of the handle joint of an embodiment of the present utility model.

[0022] Figure 6 It is a cross-sectional view of the assembly structure of the handle joint and the blade head joint of the embodiment of the utility model.

[0023] In the picture:

[0024] 10. Handle connector; 11. Insertion channel; 12. Pipeline socket; 13. Locking block; 14. First locking block; 15. Second locking block; 16. Second limiting surface; 17. Locking groove; 18. Elastic locking pin; 19. Avoidance groove; 20. Card interface; 21. Pipeline channel;

[0025] 30. Cutting head joint; 31. Locking block; 32. First limiting surface; 33. First locking block; 34. Second locking block; 35. Locking section; 36. Connecting groove; 37. Insertion section; 38. Sealing ring groove; 39. Sealing ring; 40. Liquid supply channel;

[0026] 50. Handle; 51. Blade. DETAILED DESCRIPTION

[0027] The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0028] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like used in the present invention to indicate orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0029] In the description of the present invention, it should be understood that the terms "connected," "connected," "fixed," etc. used in the present invention should be interpreted broadly. For example, the terms may refer to fixed connection, detachable connection, or integration; mechanical connection, welding connection; direct connection, indirect connection through an intermediate medium, internal communication between two elements, or interaction between two elements, unless otherwise explicitly defined. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0030] like Figures 1 to 6 As shown, a quick connector assembly of a laparoscopic instrument in a preferred embodiment of the present utility model includes a handle connector 10 and a tool head connector 30, the handle connector 10 and the tool head connector 30 are coaxially installed, one end of the handle connector 10 is provided with a plug-in channel 11, the plug-in channel 11 is provided with a pipeline socket 12 and a locking groove 17 that are sequentially connected along the axial direction, a locking block 13 is provided on one side of the pipeline socket 12 in the circumferential direction, an elastic locking pin 18 is connected to the outer periphery of the handle connector 10, one end of the elastic locking pin 18 is connected to the locking block 13, the handle connector 10 is provided with a card interface 20 arranged at a position corresponding to the elastic locking pin 18, and the card interface 20 is connected to the locking groove 17;

[0031] The outer periphery of the cutter head connector 30 is protruded to form a locking block 31, and the outer periphery of the locking block 31 is provided with a locking groove 36;

[0032] One end of the cutter head connector 30 is inserted into the insertion channel 11 through the pipeline socket 12, and the locking block 31 enters the locking groove 17 through the pipeline socket 12. When the cutter head connector 30 is rotated, the locking block 31 contacts the elastic locking pin 18 through the card interface 20, and the elastic locking pin 18 is locked in the card connection groove 36.

[0033] A laparoscopic instrument, such as Figure 1As shown, the quick connector assembly includes a handle 50, a blade head 51 and a laparoscopic instrument, wherein the handle connector 10 is connected to one end of the handle 50 facing the blade head 51, and the blade head connector 30 is connected to one end of the blade head 51 facing the handle 50.

[0034] In the quick connector assembly of the laparoscopic instrument and the laparoscopic instrument thereof of the present invention, when the handle connector 10 is connected to the cutter head connector 30, the cutter head connector 30 is inserted into the plug-in channel 11 through the pipe socket 12 to achieve connection. Thereafter, the locking block 31 enters the locking groove 17 through the pipe socket 12, and the cutter head connector 30 is rotated. Since only one end of the elastic locking pin 18 is connected to the locking block 13 and the other end is a free movable end, at least a portion of the elastic locking pin 18 is located in the locking groove 17. Then, when the locking block 31 contacts the elastic locking pin 18 through the card interface 20, it only needs to be slightly rotated around the axial direction, and the elastic locking pin 18 can be engaged with the card connection groove 36 to prevent the handle connector 10 and the cutter head connector 30 from rotating relative to each other around the axial direction, thereby achieving circumferential connection limitation between the handle connector 10 and the cutter head connector 30, and the assembly operation is simple. At the same time, the cooperation between the locking block 13 and the locking block 31 also realizes the axial limitation of the handle connector 10 and the cutter head connector 30, thereby ensuring the connection position stability of the handle connector 10 and the cutter head connector 30.

[0035] When the cutter head connector 30 needs to be separated from the handle connector 10, the cutter head connector 30 and the handle connector 10 are rotated relative to each other so that the elastic locking pin 18 slides out of the locking groove 36, and the locking block 31 moves to the pipe socket 12, so that the cutter head connector 30 and the handle connector 10 can be separated axially.

[0036] As one embodiment, Figure 4 As shown, the outer peripheral surface of the elastic locking pin 18 is arc-shaped, and the shape of the engaging groove 36 is corresponding to the shape of the elastic locking pin 18 .

[0037] Further, such as Figure 3 and Figure 6 As shown, a first limiting surface 32 is provided on the side of the locking block 31 facing the locking block 13, and a second limiting surface 16 is provided on the side of the locking block 13 facing the locking block 31. The first limiting surface 32 is in contact with the second limiting surface 16, thereby realizing axial limitation of the handle connector 10 and the tool head connector 30, and ensuring the stability of the connection position of the handle connector 10 and the tool head connector 30.

[0038] Further, such as Figures 3 to 6As shown, the locking block 31 includes a first locking block 33 and a second locking block 34 connected to the outer circumferential surface of the tool head connector 30, a locking groove 36 is provided in the first locking block 33, and a first limiting surface 32 is provided on the second locking block 34. The locking block 13 includes a first locking block 14 and a second locking block 15, one end of the first locking block 14 and the second locking block 15 are respectively connected to the insertion channel 11, and the other end protrudes radially from the inner wall of the insertion channel 11, the elastic locking pin 18 is connected to the first locking block 14, and the second limiting surface 16 is provided on the second locking block 15. The separate arrangement of the axial limiting structure and the circumferential limiting structure can reduce the risk or impact of stress concentration and improve the stability and reliability of the limiting structure.

[0039] Further, such as Figures 3 and 4 As shown, the first locking block 33 and the second locking block 34 are arranged relatively on the outer peripheral surface of the cutter head connector 30, and the first locking block 14 and the second locking block 15 are relatively connected to the inner wall of the plug-in channel 11, so that the positions of the first locking block 33 and the second locking block 34 are relatively dispersed, and the positions of the first locking block 14 and the second locking block 15 are relatively dispersed, which can reduce the risk or impact of stress concentration and improve the stability and reliability of the limiting structure.

[0040] Further, such as Figures 4 to 6 As shown, the outer circumference of the handle connector 10 is provided with an axially extending relief groove 19. The position of the relief groove 19 corresponds to the position of the locking block 13. The elastic locking pin 18 is installed in the relief groove 19, and the axial projection of the elastic locking pin 18 is located within the axial projection of the locking block 13. The provision of the relief groove 19 allows the elastic locking pin 18 to be installed in the relief groove 19, preventing the elastic locking pin 18 from radially protruding from the outer circumference of the handle connector 10. This reduces the possibility of the elastic locking pin 18 contacting other components or surfaces, thereby reducing wear and damage caused by friction, and helping to extend the service life of the pipe connector and related components.

[0041] Further, such as Figures 3 and 4 As shown, the locking block 31 is connected to the outer periphery of the cutter head connector 30 to form a locking section 35. The shape of the pipe socket 12 corresponds to the shape of the outer peripheral surface of the locking section 35, which can ensure that the cutter head connector 30 is inserted into the handle connector 10. At the same time, after the cutter head connector 30 and the handle connector 10 rotate relative to each other, the pipe socket 12 and the locking section 35 are misaligned with each other, and the initial positioning effect is good.

[0042] Further, such as Figure 3As shown, the tool head connector 30 also includes an insertion section 37, one end of which is connected to the locking section 35. The insertion section 37 is connected to the insertion channel 11, and the locking section 35 is connected to the locking groove 17. The diameter of the end of the insertion section 37 away from the locking section 35 is smaller than the minimum diameter of the locking section 35. The tool head connector 30 is generally truncated cone-shaped. The insertion of the tool head connector 30 into the insertion channel 11 is relatively small, which facilitates the assembly operation of the tool head connector 30 and the handle connector 10.

[0043] Further, such as Figure 6 As shown, the outer circumference of the insertion section 37 is provided with a sealing ring groove 38, and a sealing ring 39 is connected to the sealing ring groove 38. The outer circumference of the sealing ring 39 is in contact with the inner wall of the insertion channel 11. The sealing ring 39 provides additional friction for the connection between the handle connector 10 and the blade connector 30, preventing the handle connector 10 and the blade connector 30 from accidentally falling off or loosening, thereby improving the stability of the connection.

[0044] Further, such as Figure 6 As shown, the handle connector 10 is provided with a pipe connection channel 21 that communicates with the insertion channel 11, and the cutter head connector 30 is provided with a liquid supply channel 40. When the cutter head connector 30 is installed in the insertion channel 11, the pipe connection channel 21 communicates with the liquid supply channel 40. The pipe connection channel 21 is used to connect to a high-pressure water source, which in turn provides high-pressure water to the cutter head 51 through the pipe connection channel 21 and the liquid supply channel 40 to achieve cutting.

[0045] Further, such as Figure 6 As shown, the plug-in channel 11 , the connecting channel 21 and the liquid supply channel 40 are coaxially arranged.

[0046] In summary, the embodiment of the present invention provides a quick connector assembly for a laparoscopic instrument and the laparoscopic instrument thereof. When the handle connector 10 is connected to the tool head connector 30, the tool head connector 30 is inserted into the plug-in channel 11 through the pipe socket 12 to achieve connection. Thereafter, the locking block 31 enters the locking groove 17 through the pipe socket 12, and the tool head connector 30 is rotated. Since only one end of the elastic locking pin 18 is connected to the locking block 13 and the other end is a free movable end, when the locking block 31 contacts the elastic locking pin 18 through the card interface 20, only a slight force is required to continue rotating axially, and the elastic locking pin 18 can be engaged with the card connection groove 36 to prevent the handle connector 10 and the tool head connector 30 from rotating relative to each other axially, thereby achieving circumferential connection limitation of the handle connector 10 and the tool head connector 30, and simple assembly operation. At the same time, the cooperation between the locking block 13 and the locking block 31 also achieves axial limitation of the handle connector 10 and the tool head connector 30, thereby ensuring the stability of the connection position of the handle connector 10 and the tool head connector 30.

[0047] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and replacements can be made without departing from the technical principles of the present invention. These improvements and replacements should also be regarded as the scope of protection of the present invention.

Claims

1. A quick connector assembly for a laparoscopic instrument, characterized in that: The handle joint comprises a handle joint and a cutter head joint, wherein the handle joint is coaxially mounted with the cutter head joint, one end of the handle joint is provided with a plug-in channel, the plug-in channel is provided with a pipe socket and a locking groove which are sequentially connected along the axial direction, a locking block is provided on one side of the circumference of the pipe socket, an elastic locking pin is connected to the outer periphery of the handle joint, one end of the elastic locking pin is connected to the locking block, the handle joint is provided with a card interface which is arranged at a position corresponding to the elastic locking pin, and the card interface is connected to the locking groove; The outer periphery of the cutter head connector is protruded to form a locking block, and the outer periphery of the locking block is provided with a locking groove; One end of the cutter head connector is inserted into the plug-in channel through the pipeline socket, and the locking block enters the locking groove through the pipeline socket. When the cutter head connector is rotated, the locking block contacts the elastic locking pin through the card interface, and the elastic locking pin is locked in the card connection groove.

2. The quick connector assembly for laparoscopic instruments according to claim 1, characterized in that: A first limiting surface is provided on a side of the locking block facing the locking block, and a second limiting surface is provided on a side of the locking block facing the locking block, and the first limiting surface is in contact with the second limiting surface.

3. The quick connector assembly for laparoscopic instruments according to claim 2, characterized in that: The locking block includes a first locking block and a second locking block connected to the outer peripheral surface of the cutter head joint, the locking groove is opened on the first locking block, the first limiting surface is set on the second locking block, and the locking block includes a first locking block and a second locking block, one end of the first locking block and the second locking block are respectively connected to the plug-in channel, and the other end radially protrudes from the inner wall of the plug-in channel, the elastic locking pin is connected to the first locking block, and the second limiting surface is set on the second locking block.

4. The quick connector assembly for laparoscopic instruments according to claim 3, characterized in that: The first locking block and the second locking block are arranged opposite to each other on the outer peripheral surface of the tool head connector, and the first locking block and the second locking block are connected opposite to each other on the inner wall of the insertion channel.

5. The quick connector assembly for laparoscopic instruments according to claim 1, characterized in that: The outer peripheral surface of the handle joint is provided with an axially extending avoidance groove, the position of the avoidance groove is set corresponding to the position of the locking block, the elastic locking pin is installed in the avoidance groove, and the axial projection of the elastic locking pin is located within the axial projection of the locking block.

6. The quick connector assembly for laparoscopic instruments according to claim 1, characterized in that: The locking block is connected to the outer periphery of the cutter head connector to form a locking section, and the shape of the pipeline socket is corresponding to the shape of the outer periphery of the locking section.

7. The quick connector assembly for laparoscopic instruments according to claim 6, characterized in that: The tool head connector also includes an insertion section, one end of the insertion section is connected to the locking section, the insertion section is connected to the insertion channel, the locking section is connected to the locking groove, and the diameter of the end of the insertion section away from the locking section is smaller than the minimum diameter of the locking section.

8. The quick connector assembly for laparoscopic instruments according to claim 7, characterized in that: A sealing ring groove is provided on the outer circumference of the insertion section, a sealing ring is connected in the sealing ring groove, and the outer circumference of the sealing ring is in contact with the inner wall of the insertion channel.

9. The quick connector assembly for laparoscopic instruments according to claim 1, characterized in that: The handle joint is provided with a pipe connection channel connected to the plug-in channel, and the cutter head joint is provided with a liquid supply channel. When the cutter head joint is installed in the plug-in channel, the pipe connection channel is connected to the liquid supply channel.

10. A laparoscopic instrument, characterized in that: A quick connector assembly comprising a handle, a blade head and a laparoscopic instrument according to any one of claims 1 to 9, wherein the handle connector is connected to one end of the handle facing the blade head, and the blade head connector is connected to one end of the blade head facing the handle.

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