Endoscope instrument fixing device

Abstract

The utility model discloses an endoscope instrument fixing device, which comprises a connecting female head and a connecting male head, one side of the connecting female head is provided with a first cylindrical cavity, one end of the connecting male head can be inserted into the first cylindrical cavity, the inner wall of the first cylindrical cavity is symmetrically provided with two groups of locking group structures, and the locking group structures are connected with the connecting female head and the connecting male head. A pair of strip-shaped guide protrusions and a circle of annular groove are arranged on the outer wall of the side, inserted into the connecting female head, of the connecting male head, and the strip-shaped guide protrusions are rubber strips with certain deformation. A second cylindrical cavity is dug inwards and eccentrically in the other side of the connecting female head; the connecting male head is inserted into one side of the connecting female head, and a third cylindrical cavity is also eccentrically dug in the connecting male head; and the other end of the connecting male head is provided with an external thread. According to the utility model, an eccentric structure is adopted, so that the fixing device and the metal head of the jaw opening of the endoscope can be quickly locked or loosened.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, and in particular to an endoscopic instrument fixation device, which is used in conjunction with a flexible endoscope and an ultrasonic aspiration biopsy needle. Background Technology

[0002] Endoscopes, as minimally invasive medical devices that facilitate detection and treatment, are widely used in conjunction with other endoscopic diagnostic and therapeutic instruments during surgery. For example, using disposable endoscopic ultrasonic aspiration biopsy needles and flexible endoscopes for fine-needle puncture sampling of lesions in the submucosal and extraluminal regions of the trachea and bronchi allows for precise sampling of the lesion site with minimal trauma. However, if the ultrasonic aspiration biopsy needle and flexible endoscope are not properly secured, the needle is prone to wobbling during sampling, making it difficult to control the relative position of the sheath and endoscope tip, hindering the surgeon's operation. Therefore, there is a desire for a safe and effective connection and fixation between the ultrasonic aspiration biopsy needle and the flexible endoscope. Currently, the connection on the market is mainly achieved through a threaded fixing device. One end of the fixing device is engaged with a metal head with a frustum-shaped protrusion at the top of the endoscope's forceps orifice, while the other end connects to the ultrasonic aspiration biopsy needle. See attached diagram for details. Figure 11 As shown. However, this type of threaded rotation fixation has a long rotation stroke due to the pitch of the thread. During clinical operation, it is necessary to rotate many times to connect the fixation device to the endoscope. The connection speed is slow and time-consuming. If the connection is not in place or the rotation is overdone, it will also affect the fixation of the subsequent ultrasound aspiration biopsy needle, thereby affecting the effect of ultrasound puncture. In other words, the existing technology has the problems of inconvenience in operation and low stability. Utility Model Content

[0003] To overcome the shortcomings of the existing devices mentioned above, this utility model provides an endoscopic instrument fixation device that is easy to use, quick and efficient to install, and has good stability for connecting an ultrasonic aspiration biopsy needle to a flexible endoscope forceps orifice.

[0004] The technical solution adopted by this utility model to solve its technical problem is:

[0005] An endoscopic instrument fixation device is used to connect between a flexible endoscope forceps orifice 6 and an ultrasonic aspiration biopsy needle 4. It includes a female connector 1 and a male connector 2 that can be interlocked and have a through hole in the middle for the ultrasonic aspiration biopsy needle to pass through. One side of the female connector 1 has a first cylindrical cavity 11, and one end of the male connector 2 can be inserted into the first cylindrical cavity 11. Two sets of locking structures are symmetrically arranged on the inner wall of the first cylindrical cavity 11. The locking structures include… Locking protrusion 12 and strip guide groove 13 are arranged on the same axis. The strip guide groove 13 is located on the outer side near the male connector 2, and the locking protrusion 12 is located on the inner side away from the male connector 2. The male connector 2 is inserted into the outer wall of the female connector 1. It is provided with a pair of strip guide protrusions 21 that can cooperate with the strip guide groove 13 and a ring groove 22 for cooperating with the locking protrusion 12. The strip guide protrusions 21 are rubber strips with a certain amount of deformation.

[0006] On the other side of the connecting head 1, an inwardly eccentrically carved second cylindrical cavity 14 with a diameter smaller than the first cylindrical cavity 11 and connected to the first cylindrical cavity 11 is provided. The second cylindrical cavity 14 and the first cylindrical cavity 11 form a stepped structure. The second cylindrical cavity 14 is used to insert the metal head 3 of the flexible endoscope forceps channel 6 with a ring of frustum-shaped protrusions 31 at the top. The diameter of the second cylindrical cavity 14 is equivalent to the maximum outer diameter of the frustum-shaped protrusions 31, and the frustum-shaped protrusions 31 can be inserted into the first cylindrical cavity 11 through the second cylindrical cavity 14.

[0007] The male connector 2 is inserted into the side of the female connector 1, and an eccentrically carved third cylindrical cavity 23 with the same diameter as the second cylindrical cavity 14 is provided to accommodate the frustum-shaped protrusion 31. When the strip-shaped guide protrusion 21 on the male connector 2 is engaged with the strip-shaped guide groove 13 on the female connector 1, the end faces of the eccentrically set second cylindrical cavity 14 and third cylindrical cavity 23 are aligned. This position is the unlocking position where the metal head 3 of the flexible endoscope forceps channel inserted into the female connector can be pulled out from the second cylindrical cavity 14. When the female connector and the male connector are rotated 180 degrees relative to each other, the end faces of the eccentrically set second cylindrical cavity 14 and third cylindrical cavity 23 are misaligned, and the top frustum-shaped protrusion 31 of the metal head 3 of the flexible endoscope forceps channel inserted into the female connector can be tightly locked between the first cylindrical cavity 11 and the third cylindrical cavity 23, which is the locking position.

[0008] The other end of the male connector 2 is provided with an external thread 24 for connecting with the ultrasonic aspiration biopsy needle 4 via a threaded connection.

[0009] Preferably, the outer walls of the female connector 1 and the male connector 2 are also provided with markings 5 ​​for identifying the unlocked and locked positions, so as to provide guidance for operation.

[0010] Preferably, the locking protrusion 12, the strip-shaped guide groove 13, and the strip-shaped guide protrusion 21 are all provided with a rounded transition structure on each end face.

[0011] Preferably, the end of the connecting female head 1 that contacts the metal head 3 of the flexible endoscope forceps channel is also provided with a positioning groove 15, so as to cooperate with a protrusion 61 on the flexible endoscope forceps channel 6 for positioning.

[0012] The beneficial effects of this utility model are:

[0013] This utility model discloses an endoscopic instrument fixation device with an ingenious structure. Employing an eccentric design, the device achieves rapid locking or unlocking between the fixation device and the metal head of the endoscopic forceps orifice through the relative rotation of the male and female connecting heads. This rapid fixation reduces the need for rotation of the fixation device. Consequently, this device can be conveniently and efficiently used with disposable endoscopic ultrasound aspiration biopsy needles and flexible endoscopes, making fine-needle puncture sampling under endoscopic ultrasound guidance for lesions in the trachea and bronchi submucosa and extraluminal regions faster, more convenient, and more stable. This significantly improves medical and nursing efficiency, saves instrument switching time, and is highly practical, making it worthy of widespread adoption. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0015] Figure 1 This is a three-dimensional structural diagram of the fixing device according to an embodiment of the present utility model;

[0016] Figure 2 for Figure 1 A schematic diagram of the disassembled structure;

[0017] Figure 3 for Figure 1 A schematic diagram of the structure viewed from below;

[0018] Figure 4 This is a three-dimensional structural diagram of the fixing device of this utility model installed on the orifice of a flexible endoscope.

[0019] Figure 5 for Figure 4 A schematic diagram of the disassembled structure;

[0020] Figure 6 for Figure 4 Another perspective on the disassembled structure;

[0021] Figure 7 for Figure 4 A perspective structural diagram;

[0022] Figure 8 This is a bottom view of the fixing device in the unlocked position according to an embodiment of the present invention;

[0023] Figure 9 This is a bottom view of the fixing device in the locked position according to an embodiment of the present invention;

[0024] Figure 10 This is a schematic diagram showing the usage state of the fixing device according to an embodiment of the present utility model;

[0025] Figure 11 This is a schematic diagram illustrating the usage of the fixing device in the background technology. Detailed Implementation

[0026] All features disclosed in this specification, or all steps in all disclosed methods or processes, may be combined in any way, except for mutually exclusive features and / or steps.

[0027] Any feature disclosed in this specification (including any appended claims, abstract, and drawings) may be replaced by other equivalent or similar features for a similar purpose, unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is merely one example of a series of equivalent or similar features.

[0028] like Figure 1-10 As shown, an endoscopic instrument fixation device is used to connect between a flexible endoscope forceps orifice 6 and an ultrasonic aspiration biopsy needle 4. It includes a female connector 1 and a male connector 2 that can be interlocked, each having a through hole in the middle for the ultrasonic aspiration biopsy needle to pass through. One side of the female connector 1 has a first cylindrical cavity 11, and one end of the male connector 2 can be inserted into this first cylindrical cavity 11. Two sets of locking structures are symmetrically arranged on the inner wall of the first cylindrical cavity 11. It includes a locking protrusion 12 and a strip-shaped guide groove 13 arranged on the same axis. The strip-shaped guide groove 13 is located on the outer side near the male connector 2, and the locking protrusion 12 is located on the inner side away from the male connector 2. The male connector 2 is inserted into the outer wall of the female connector 1. It is provided with a pair of strip-shaped guide protrusions 21 that can cooperate with the strip-shaped guide groove 13 and a ring groove 22 for cooperating with the locking protrusion 12. The strip-shaped guide protrusions 21 are rubber strips with a certain amount of deformation.

[0029] On the other side of the connecting head 1, an inwardly eccentrically carved second cylindrical cavity 14 with a diameter smaller than the first cylindrical cavity 11 and connected to the first cylindrical cavity 11 is provided. The second cylindrical cavity 14 and the first cylindrical cavity 11 form a stepped structure. The second cylindrical cavity 14 is used to insert the metal head 3 of the flexible endoscope forceps channel 6 with a ring of frustum-shaped protrusions 31 at the top. The diameter of the second cylindrical cavity 14 is equivalent to the maximum outer diameter of the frustum-shaped protrusions 31, and the frustum-shaped protrusions 31 can be inserted into the first cylindrical cavity 11 through the second cylindrical cavity 14.

[0030] The male connector 2 is inserted into the side of the female connector 1, and an eccentrically carved third cylindrical cavity 23 with the same diameter as the second cylindrical cavity 14 is provided to accommodate the frustum-shaped protrusion 31. When the strip-shaped guide protrusion 21 on the male connector 2 is engaged with the strip-shaped guide groove 13 on the female connector 1, the end faces of the eccentrically set second cylindrical cavity 14 and third cylindrical cavity 23 are aligned. This position is the unlocking position where the metal head 3 of the flexible endoscope forceps channel inserted into the female connector can be pulled out from the second cylindrical cavity 14. When the female connector and the male connector are rotated 180 degrees relative to each other, the end faces of the eccentrically set second cylindrical cavity 14 and third cylindrical cavity 23 are misaligned, and the top frustum-shaped protrusion 31 of the metal head 3 of the flexible endoscope forceps channel inserted into the female connector can be tightly locked between the first cylindrical cavity 11 and the third cylindrical cavity 23, which is the locking position.

[0031] The other end of the male connector 2 is provided with an external thread 24 for connecting with the ultrasonic aspiration biopsy needle 4 via a threaded connection.

[0032] Preferably, the outer walls of the female connector 1 and the male connector 2 are also provided with markings 5 ​​for identifying the unlocked and locked positions, so as to provide guidance for operation.

[0033] Preferably, the locking protrusion 12, the strip-shaped guide groove 13, and the strip-shaped guide protrusion 21 are all provided with a rounded transition structure on each end face.

[0034] Preferably, the end of the connecting female head 1 that contacts the metal head 3 of the flexible endoscope forceps channel is also provided with a positioning groove 15, so as to cooperate with a protrusion 61 on the flexible endoscope forceps channel 6 for positioning.

[0035] In use, first, the male connector 2 is fixed to the ultrasonic aspiration biopsy needle 4 with threads. Then, the male connector 2 is inserted into the female connector 1 through the guide of the strip-shaped guide protrusion 21. Next, the metal head 3 of the flexible endoscope forceps channel 6 is inserted into the female connector 1 through the second cylindrical cavity 14, ensuring that its frustum-shaped protrusion 31 at the top is fully inserted into the first cylindrical cavity 11 of the female connector 1. Finally, the female connector 1 and the male connector 2 are rotated relative to each other. During this process, the locking protrusion 12 moves continuously in the annular groove 22, while the strip-shaped guide protrusion 21, which has a certain amount of deformation, is dislodged from the strip-shaped guide groove 13 and is then inserted into the first cylindrical cavity 11 of the female connector 1. The inner wall of cavity 11 is squeezed tighter and tighter, and the friction between it and the inner wall increases until it rotates 180 degrees relative to each other, that is, from the unlocked position to the locked position. At this time, the frustum-shaped protrusion 31 at the top of the metal head 3 of the flexible endoscope forceps 6 will be stuck between the first cylindrical cavity 11 and the third cylindrical cavity 23 and cannot be pulled out from the connecting head. Due to the friction between the strip guide protrusion 21 and the inner wall of the first cylindrical cavity 11 on the connecting head 1, the fixing device can be firmly fixed to the metal head 3 of the flexible endoscope forceps, thereby firmly fixing the flexible endoscope and the ultrasonic aspiration biopsy needle 4 together.

[0036] After the operation is completed, simply rotate the male or female connector 180 degrees in the opposite direction to return it to the unlocked position, and the metal head 3 of the flexible endoscope forceps 6 can be dislodged from the female connector. The ultrasonic aspiration biopsy needle 4 can be removed by rotating the male connector 2 to detach it from the ultrasonic aspiration biopsy needle 4. It is easy to use.

[0037] This utility model discloses an endoscopic instrument fixation device with an ingenious structure. Employing an eccentric design, the device achieves rapid locking or unlocking between the fixation device and the metal head of the endoscopic forceps orifice through the relative rotation of the male and female connecting heads. This rapid fixation reduces the need for rotation of the fixation device. Consequently, this device can be conveniently and efficiently used with disposable endoscopic ultrasound aspiration biopsy needles and flexible endoscopes, making fine-needle puncture sampling under endoscopic ultrasound guidance for lesions in the trachea and bronchi submucosa and extraluminal regions faster, more convenient, and more stable. This significantly improves medical and nursing efficiency, saves instrument switching time, and is highly practical, making it worthy of widespread adoption.

[0038] This invention is not limited to the specific embodiments described above. This invention extends to any new feature or combination disclosed in this specification, as well as any new method or process step or combination disclosed herein.

Claims

1. An endoscopic instrument fixation device for connecting between a flexible endoscope forceps orifice (6) and an ultrasonic aspiration biopsy needle (4), characterized in that, The device includes a female connector (1) and a male connector (2) that can be inserted together, with a through hole in the middle for an ultrasonic aspiration biopsy needle to pass through. The female connector (1) has a first cylindrical cavity (11) on one side, and one end of the male connector (2) can be inserted into the first cylindrical cavity (11). On the inner wall of the first cylindrical cavity (11), two sets of locking structures are symmetrically arranged. The locking structure includes a locking protrusion (12) and a strip-shaped guide groove arranged on the same axis. (13) The strip guide groove (13) is located on the outer side near the male connector (2), and the locking protrusion (12) is located on the inner side away from the male connector (2). The male connector (2) is inserted into the outer wall of the female connector (1) and is provided with a pair of strip guide protrusions (21) that can cooperate with the strip guide groove (13) and a ring groove (22) for cooperating with the locking protrusion (12). The strip guide protrusion (21) is a rubber strip with a certain amount of deformation. On the other side of the connecting head (1), an inwardly eccentrically excavated second cylindrical cavity (14) with a diameter smaller than that of the first cylindrical cavity (11) and connected to the first cylindrical cavity (11) is formed. The second cylindrical cavity (14) and the first cylindrical cavity (11) form a stepped structure. The second cylindrical cavity (14) is used to insert the metal head (3) of the flexible endoscope forceps channel (6) with a ring of frustum-shaped protrusions (31) at the top. The diameter of the second cylindrical cavity (14) is equivalent to the maximum outer diameter of the frustum-shaped protrusions (31), and the frustum-shaped protrusions (31) can be inserted into the first cylindrical cavity (11) through the second cylindrical cavity (14). The male connector (2) is inserted into the interior of one side of the female connector (1). A third cylindrical cavity (23), with the same diameter as the second cylindrical cavity (14), is also eccentrically carved to accommodate the frustum-shaped protrusion (31). When the strip-shaped guide protrusion (21) on the male connector (2) is inserted into the strip-shaped guide groove (13) on the female connector (1), the end faces of the eccentrically set second cylindrical cavity (14) and third cylindrical cavity (23) are aligned. This position is where the connector can be inserted. The metal head (3) of the flexible endoscope forceps in the female head is pulled out of the second cylindrical cavity (14) in the unlocking position; the female head and the male head are rotated 180 degrees relative to each other. The end faces of the second cylindrical cavity (14) and the third cylindrical cavity (23) are offset so that the top frustoconical protrusion (31) of the metal head (3) inserted into the flexible endoscope forceps in the female head can be tightly locked between the first cylindrical cavity (11) and the third cylindrical cavity (23), which is the locking position; The other end of the male connector (2) is provided with an external thread (24) for threaded connection with the ultrasonic aspiration biopsy needle (4).

2. The endoscopic instrument fixation device according to claim 1, characterized in that, The outer walls of the female connector (1) and the male connector (2) are also marked with labels (5) for identifying the unlock position and the locking position.

3. The endoscopic instrument fixation device according to claim 1, characterized in that, The locking protrusion (12), the strip guide groove (13), and the strip guide protrusion (21) are all provided with arc transition structures on their respective end faces.

4. The endoscopic instrument fixation device according to claim 1, characterized in that, On one end of the connecting female head (1) that contacts the metal head (3) of the flexible endoscope forceps, there is also a positioning groove (15) so as to cooperate with a protrusion (61) on the flexible endoscope forceps (6) for positioning.

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