Endoscope sheath with pluggable and quick-changing endoscope sheath tube

Abstract

The invention provides an endoscope sheath with an endoscope sheath tube capable of being inserted, pulled and replaced quickly, and belongs to the technical field of medical supplies. The endoscopic sheath comprises an endoscopic sheath tube, a net surface sliding block and a rod seat, the tail end of the endoscope sheath tube is positioned in the rod seat and is rotationally matched with the rod seat; the net surface sliding block is located on the outer side of the rod seat and sleeved with the rod seat; a compression spring is arranged between the net surface sliding block and the rod seat; one end of the compression spring abuts against the outer wall of the rod base, and the other end of the compression spring abuts against the top face of a protruding annular edge on the inner side of the net face sliding block. A through hole is further formed in the rod seat, and a spherical blind hole corresponding to the through hole is formed in the tail end of the endoscope sheath tube; and a positioning cylindrical rod in sliding fit with the through hole is arranged in the through hole. The endoscopic sheath tube and the endoscopic sheath body can be quickly inserted, pulled and replaced.

Description

Technical Field

[0001] The invention belongs to the technical field of medical supplies, and in particular relates to a scope sheath with a pluggable and quick-changeable scope sheath tube. Background Art

[0002] The scope sheaths can be roughly divided into two categories. The first category has an integrated design of the scope sheath body, scope sheath tube, and water bridge; the second category has a detachable scope sheath tube, which is connected and fixed to the scope sheath body by threads + positioning pins. However, the actual surgical environment is unpredictable. After using them, clinicians pointed out that the two types of scope sheaths have the following shortcomings:

[0003] 1. The first type of endoscope sheaths, it is cumbersome to replace the endoscope sheaths during surgery, which prolongs the operation time. During the operation, clinicians will replace endoscopes of different specifications and models according to the actual clinical situation, such as: viewing angles of 0°, 30°, 70°, working lengths of 155mm, 175mm, etc. When replacing endoscopes of different specifications and models, the corresponding endoscope sheaths need to be replaced. However, during the replacement process, the water bridge and the perfusion pipeline will be repeatedly plugged in and out and tightened, and the perfusion equipment will be shut down / restarted / standby. This will eventually lead to a corresponding extension of the operation time.

[0004] 2. The first type of scope sheath is difficult to clean, disinfect / sterilize after surgery. Because the scope sheath is a reusable device, it needs to be cleaned and sterilized after surgery. However, due to the complexity of its internal structure, the length of the scope sheath tube, and the non-detachable integrated design, it needs to be constantly rinsed and soaked after surgery. The interior needs to be cleaned before the next step of sterilization and storage.

[0005] 3. The first type of scope sheath has an integrated design and a high maintenance cost. Because the sheath body, scope sheath tube, and water bridge are integrated. The scope sheath tube needs to be inserted into the human body and is the part that comes into contact with the human body. In clinical surgery, when other surgical instruments are used in conjunction with the scope sheath, improper operation may cause damage to the end of the scope sheath tube. Because of its integrated design, the subsequent maintenance cost is high, further increasing the burden on the hospital.

[0006] 4. The second type of mirror sheath, the mirror sheath tube and the mirror sheath body are connected and fixed by threads + positioning pins, and there is a risk of loosening and falling off during surgery. The positioning pin mainly serves to position the mirror sheath tube and the direction of the head end. Due to its structure, the thread is usually about 2 circles, which plays a tightening role. However, during the surgical use, the mirror sheath usually moves around the center point of the mirror sheath main axis to perform direction control actions such as entry, withdrawal, rotation, and tilt. As a result, the mirror sheath tube and the mirror sheath body are still at risk of loosening and falling off. Summary of the invention

[0007] In view of this, the present invention provides a mirror sheath with a mirror sheath tube that can be plugged in and quickly replaced, which can achieve quick plugging and replacement of the mirror sheath tube and the mirror sheath body.

[0008] The present invention adopts the following technical solutions to achieve the above technical effects:

[0009] A telescope sheath with a pluggable and quick-changeable telescope sheath tube, comprising a telescope sheath tube with overlapping central axes, a mesh sliding block and a rod seat;

[0010] The end of the mirror sheath tube is located in the rod seat, and the two are rotatably matched; the mesh sliding block is located on the rod seat and is sleeved on the outside of the rod seat; a compression spring is arranged between the mesh sliding block and the rod seat; one end of the compression spring abuts against the outer wall of the rod seat, and the other end abuts against the top surface of the annular edge protruding on the inner side of the mesh sliding block;

[0011] The rod seat is also provided with a through hole, and the end of the mirror sheath tube is provided with a spherical blind hole corresponding to the through hole; a positioning cylindrical rod is provided in the through hole to slide with the through hole;

[0012] When the mirror sheath is locked, one end of the positioning cylindrical rod abuts against the inner annular surface of the annular edge, and the other end abuts against the spherical blind hole.

[0013] Furthermore, a positioning tube is provided at the end of the scope sheath tube; the positioning tube is fixedly connected to the end of the scope sheath tube, and the central axes of the two coincide; and the spherical blind hole is located on the outer wall of the positioning tube.

[0014] Furthermore, the rod seat is also provided with the middle end of the sheath body; the rod seat is provided with a plurality of guide holes, and the plurality of guide holes are arranged in a circular array with the central axis of the rod seat; the position of the terminal of the sheath body corresponds to the position of the guide holes; a water bridge is provided on the outer wall of the middle end of the sheath body, and physiological saline flows in from one end of the water bridge, and enters into the sheath tube through the guide holes and the central axis hole of the rod seat in sequence.

[0015] Furthermore, the bottom of the rod seat is sleeved with the front end of the mirror sheath body rotatably matched therewith, and the bottom end of the mesh sliding block is against the top of the front end of the sheath body.

[0016] Furthermore, the top of the rod seat is provided with a rear end of the sheath body which is rotatably matched therewith and is used for connecting the arthroscope.

[0017] Furthermore, the end of the water bridge passes through the middle end of the mirror sheath body and corresponds to the guide hole, and the water bridge and the mirror sheath body are rotatably matched.

[0018] Furthermore, a sheath tube sealing ring is provided between the positioning tube at the end of the sheath tube and the rod seat; and a sheath body sealing ring is provided between the top of the rod seat and the top of the middle end of the sheath body.

[0019] Furthermore, part of the compression spring is sleeved on the middle end of the mirror sheath body, and a notch is provided on the mesh sliding block to avoid the water bridge.

[0020] Furthermore, a step is provided on the through hole side away from the spherical blind hole, and the positioning cylindrical rod is provided with a boss matched with the step, and the boss is mounted on the surface of the step.

[0021] Compared with the prior art, the technical solution of the present invention has the following beneficial effects:

[0022] 1. The arrangement of the rod seat, the positioning tube and the mesh sliding block enables the mirror sheath tube and the mirror sheath body to be quickly plugged in and replaced.

[0023] 2. The mirror sheath tube is tightly connected to the mirror sheath body, and the direction of the mirror sheath tube head end can be positioned.

[0024] 3. Does not affect the function of the endoscope sheath and the usage habits of clinicians.

[0025] 4. It is detachable and easy to clean and sterilize after surgery.

[0026] 5. The surface of the mesh sliding block is designed with a reticulated pattern to increase surface friction. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of an embodiment of the present invention;

[0028] Figure 2 It is a front view of an embodiment of the present invention.

[0029] Figure 3 is a cross-sectional schematic diagram of an embodiment of the present invention;

[0030] Figure 4 It is a structural schematic diagram of a mirror sheath tube according to an embodiment of the present invention;

[0031] Figure 5 for Figure 4 Schematic cross-sectional view of ;

[0032] Figure 6 It is a structural schematic diagram of the mirror sheath body of an embodiment of the present invention;

[0033] Figure 7 for Figure 6 Schematic cross-section of .

[0034] In the figure: 1. mirror sheath tube, 2. front end of mirror sheath body, 3. mesh sliding block, 4. compression spring, 5. mirror sheath body sealing ring, 6. rear end of mirror sheath body, 7. mirror sheath tube sealing ring, 8. positioning cylindrical rod, 9. middle end of mirror sheath body, 10. sealing ring at the rear end of mirror sheath body, 11. water bridge, 12. rod seat. DETAILED DESCRIPTION

[0035] Below, the present invention is further described in conjunction with the accompanying drawings.

[0036] A telescope sheath with a pluggable and quick-changeable telescope sheath, comprising a telescope sheath 1 with coincident central axes, a mesh sliding block 3 and a rod seat 12;

[0037] The end of the mirror sheath tube 1 is located in the rod seat, and the two are rotatably matched; the mesh sliding block is located on the rod seat and is sleeved on the outside of the rod seat; a compression spring 4 is arranged between the mesh sliding block and the rod seat; one end of the compression spring is against the outer wall of the rod seat, and the other end is against the top surface of the raised annular edge on the inner side of the mesh sliding block;

[0038] The rod seat is also provided with a through hole, and the end of the mirror sheath tube is provided with a spherical blind hole corresponding to the through hole; a positioning cylindrical rod 8 is provided in the through hole to slide with it;

[0039] When the mirror sheath tube 1 is locked, one end of the positioning cylindrical rod abuts against the inner annular surface of the annular edge, and the other end abuts against the spherical blind hole.

[0040] Furthermore, a positioning tube is provided at the end of the scope sheath tube; the positioning tube is fixedly connected to the end of the scope sheath tube, and the central axes of the two coincide; and the spherical blind hole is located on the outer wall of the positioning tube.

[0041] Furthermore, the rod seat is also provided with a middle end 9 of the sheath body; the rod seat is provided with a plurality of guide holes, and the plurality of guide holes are arranged in a circular array with the central axis of the rod seat; the position of the terminal of the sheath body corresponds to the position of the guide holes; a water bridge is provided on the outer wall of the middle end of the sheath body, and physiological saline flows in from one end of the water bridge, and enters into the sheath tube through the guide holes and the central axis hole of the rod seat in turn.

[0042] Furthermore, the bottom of the rod seat is sleeved with a front end 2 of the mirror sheath body rotatably matched therewith, and the bottom end of the mesh sliding block is against the top of the front end 2 of the sheath body.

[0043] Furthermore, a rear end 6 of the sheath body rotatably matched therewith is provided on the top of the rod seat for connecting the arthroscope.

[0044] Furthermore, the end of the water bridge passes through the middle end 9 of the mirror sheath body and corresponds to the guide hole, and the water bridge and the mirror sheath body are rotatably matched.

[0045] Furthermore, a sheath tube sealing ring 7 is provided between the positioning tube at the end of the sheath tube and the rod seat; a sheath body sealing ring 5 is provided between the top of the rod seat and the top of the middle end 9 of the sheath body.

[0046] Furthermore, part of the compression spring is sleeved on the middle end 9 of the mirror sheath body, and a notch is provided on the mesh sliding block 3 to avoid the water bridge.

[0047] Furthermore, a step is provided on the through hole side away from the spherical blind hole, and the positioning cylindrical rod is provided with a boss that cooperates with the step. The boss is mounted on the surface of the step so that the maximum protruding length of the positioning cylindrical rod is the depth of the spherical blind hole, which facilitates the insertion of the positioning tube.

[0048] The following is a more specific embodiment:

[0049] A mirror sheath tube with pluggable quick-change mirror sheath-structure, including a mirror sheath tube, a mirror sheath body front end mesh sliding block, a compression spring, a mirror sheath body sealing ring, a mirror sheath body rear end mirror sheath tube sealing ring, a positioning cylindrical rod, a mirror sheath body middle end, a mirror sheath body rear end sealing ring, a water bridge rod seat

[0050] During use, slide the textured sliding block backward, compress the spring, and insert the mirror sheath tube. There are four evenly distributed spherical blind holes on the right end of the mirror sheath tube. After inserting the mirror sheath body, it can correspond to the four evenly distributed positioning cylindrical rods. Turn the mirror sheath tube to turn the head end of the mirror sheath tube to the appropriate direction and then release the textured sliding block. The compression spring rebounds and pushes the textured sliding block to press the four cylindrical positioning rods into the corresponding spherical blind holes one by one. It achieves the effect of quick plugging and unplugging and positioning direction. Among them, the mirror sheath body sealing ring, the mirror sheath tube sealing ring, and the mirror sheath body rear end sealing ring all play a sealing role to prevent the physiological saline injected from the water bridge from leaking out of the gap.

[0051] 1. Scope sheath: inserted into the human body during use, in contact with the human body, circulates physiological saline, and protects the arthroscopy tube to prevent it from bending and damage.

[0052] 2. The front end of the mirror sheath body: It is threadedly connected to the rod seat and serves as a limit for the anilox sliding block.

[0053] 3. Textured sliding block: The texture on the surface increases the friction. It can slide and compress the spring artificially, or it can be affected by the elastic force of the spring to press the positioning cylindrical rod into the spherical blind hole of the mirror sheath and limit its movement.

[0054] 4. Compression spring: provides elastic force.

[0055] 5. Mirror sheath body sealing ring: plays a sealing role.

[0056] 6. The rear end of the sheath body: one end is threadedly connected to the rod seat, and the other end is used to connect the arthroscope.

[0057] 7.Mirror sheath sealing ring: plays a sealing role.

[0058] 8. Positioning cylindrical rod: acts as a limit mirror sheath.

[0059] 9. The middle end of the sheath: connected to the water bridge, can rotate 360° around the central axis of the sheath, making it easier for doctors to operate during surgery.

[0060] 10. Sealing ring at the rear end of the sheath body: serves as a seal.

[0061] 11. Water bridge: It is connected to the water pump pipeline during the operation, circulates normal saline, and can be opened and closed.

[0062] 12. Rod seat: The core component of the mirror sheath, which is threadedly connected to the front end and rear end of the mirror sheath tube body, and serves to position the cylindrical rod, provide a working channel, and circulate saline.

[0063] It should be understood that the above description of the specific implementation methods of this patent is only an exemplary description listed to facilitate ordinary technicians in the field to understand the patent scheme, and does not imply that the scope of protection of this patent is limited to these individual examples. Ordinary technicians in this field can fully understand the technical scheme of this patent and, without any creative work, obtain more specific implementation methods by combining technical features, replacing some technical features, adding more technical features, etc. to the examples listed in this patent. All these specific implementation methods are within the scope of the claims of this patent. Therefore, these new specific implementation methods should also be within the scope of protection of this patent.

[0064] In addition, for the purpose of simplifying the description, this patent may not list some common specific implementation schemes, which are naturally conceivable to ordinary technicians in this field after understanding the technical solution of this patent. Obviously, these solutions should also be included in the scope of protection of this patent.

Claims

1. A telescope sheath with a pluggable and quick-changeable sheath tube, characterized in that: It comprises a mirror sheath tube (1), a mesh sliding block (3) and a rod seat (12) whose central axes coincide with each other; The end of the mirror sheath tube (1) is located in the rod seat, and the two are rotatably matched; the mesh sliding block is located on the rod seat and is sleeved on the outside of the rod seat; a compression spring (4) is arranged between the mesh sliding block and the rod seat; one end of the compression spring abuts against the outer wall of the rod seat, and the other end abuts against the top surface of the annular edge protruding on the inner side of the mesh sliding block; The rod seat is also provided with a through hole, and the end of the mirror sheath tube is provided with a spherical blind hole corresponding to the through hole; a positioning cylindrical rod (8) is provided in the through hole and is slidably matched with the through hole; When the mirror sheath tube (1) is locked, one end of the positioning cylindrical rod abuts against the inner annular surface of the annular edge, and the other end abuts against the spherical blind hole.

2. A quick-change mirror sheath with a mirror sheath tube that can be plugged in according to claim 1, characterized in that: A positioning tube is provided at the end of the scope sheath tube; the positioning tube is fixedly connected to the end of the scope sheath tube, and the central axes of the two coincide; the spherical blind hole is located on the outer wall of the positioning tube.

3. The mirror sheath with a pluggable and quick-change mirror sheath tube according to claim 1, characterized in that: The rod seat is also provided with a middle end of the sheath body (9); the rod seat is provided with a plurality of flow guide holes, and the plurality of flow guide holes are arranged in a circular array with the central axis of the rod seat; the position of the terminal of the sheath body corresponds to the position of the flow guide holes; a water bridge is provided on the outer wall of the middle end of the sheath body, and physiological saline flows in from one end of the water bridge, passes through the flow guide holes and the central axis hole of the rod seat in sequence, and enters the sheath tube.

4. The mirror sheath with a pluggable and quick-change mirror sheath tube according to claim 1, characterized in that: The bottom of the rod seat is sleeved with a mirror sheath body front end (2) which is rotatably matched therewith, and the bottom end of the mesh sliding block abuts against the top of the sheath body front end (2).

5. The mirror sheath with a pluggable and quick-change mirror sheath tube according to claim 1, characterized in that: The top of the rod seat is provided with a rear end (6) of the mirror sheath body which is rotatably matched with the rod seat and is used for connecting the arthroscope.

6. The mirror sheath with a pluggable and quick-change mirror sheath tube according to claim 3, characterized in that: The end of the water bridge passes through the middle end (9) of the mirror sheath body and corresponds to the guide hole, and the water bridge and the mirror sheath body are rotatably matched.

7. The mirror sheath with a pluggable and quick-change mirror sheath tube according to claim 3, characterized in that: A sheath tube sealing ring (7) is provided between the positioning tube at the end of the sheath tube and the rod seat; and a sheath body sealing ring (5) is provided between the top of the rod seat and the top of the middle end (9) of the sheath body.

8. The mirror sheath with a pluggable and quick-change mirror sheath tube according to claim 3, characterized in that: A portion of the compression spring is sleeved on the middle end (9) of the mirror sheath body, and a notch is provided on the mesh sliding block (3) to avoid the water bridge.

9. The mirror sheath with a pluggable and quick-change mirror sheath tube according to claim 1, characterized in that: A step is arranged on the through hole side away from the spherical blind hole, and the positioning cylindrical rod is provided with a boss matched with the step, and the boss is mounted on the surface of the step.

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