Disposable arthroscope

Abstract

The invention discloses a disposable arthroscope, and relates to the field of medical instruments. The disposable arthroscope comprises an arthroscope sheath, an arthroscope body and an upper shell, the arthroscope sheath comprises a sheath tube body, the interior of the sheath tube body is divided into a first cavity and a second cavity, and guide steel wires are embedded in the two sides of the interior of the sheath tube body; the end, away from the sheathing canal body, of the guide steel wire is connected with a winding mechanism, and the winding mechanism generates pulling force to promote angle adjustment of the end of the sheathing canal body. Outer ring blocks are fixedly arranged at the upper end and the lower end of the outer wall of one end of the sheathing canal body, and the outer wall of the end, close to the outer ring blocks, of the sheathing canal body is slidably sleeved with a lower shell. The disposable arthroscope sheath structure with the detachable function is designed, the auxiliary angle adjusting function is achieved, the problem that due to the fact that a traditional arthroscope is provided with an angle adjusting structure, disinfection is difficult is solved, disposable use parts are changed, the use cost is reduced, and installation, disassembly, disinfection and use are convenient.

Description

Technical Field

[0001] The present invention relates to the field of medical instruments, in particular to a disposable arthroscope. Background Art

[0002] Diagnosis and treatment of bone and joint problems often require visualization of internal tissues. However, proper visualization of the location of internal tissues can be expensive and time-consuming. X-rays and CT scans are both imaging examinations, but they have the disadvantages of unclear images and non-real-time observation. Although magnetic resonance imaging (MRI) technology can capture clear images of diseased or damaged tissues, patients need to make an appointment in advance and wait for a long time, and the cost is expensive. In recent years, arthroscopy has been widely used in diagnosis and surgery. During the operation, the front end of the arthroscope is generally required to pass through the joint wound and into the internal tissue to collect and transmit intraoperative images.

[0003] Traditional arthroscopes are usually used in operating rooms. Not only because the main unit used in conjunction with them (such as equipment for image processing, display, light source, power supply, etc.) is large in size, but also the probes are mostly reusable and need to be sterilized before each use. In order to ensure the adequacy of the observation range, most arthroscope bodies are designed with an articulated structure with an angle adjustment function. For example, patent (CN116269183A) discloses a portable arthroscope, which proposes an arthroscope with an angle adjustment function to increase the observation range. However, the use of an articulated structure results in a large number of connection seams on the arthroscope body, resulting in incomplete or difficult disinfection. In addition, the disposal of disposable items causes a large amount of cost increase and waste. Summary of the Invention

[0004] In response to the shortcomings of the prior art, the present invention provides a disposable arthroscope, comprising a sheath, an arthroscope body, and an upper shell. The sheath comprises a sheath body, the interior of which is divided into a first cavity and a second cavity. Guide wires are embedded on both sides of the interior of the sheath body. The end of the guide wire away from the sheath body is connected to a winding mechanism, which generates tension to adjust the angle of the end of the sheath body.

[0005] The outer wall of one end of the sheath body is fixedly provided with an outer ring block at the upper and lower ends, and the outer wall of the sheath body close to the outer ring block is slidably sleeved with a lower shell, the lower shell includes a fixed block, a lower shell body and a clamping block, and the upper and lower ends of the outer wall of the fixed block are equipped with a locking mechanism;

[0006] The locking mechanism includes a locking bolt, a locking block and an extrusion block, a spring is connected between the locking block and the extrusion block, and the locking bolt thread passes through the fixing block;

[0007] The arthroscope body is fixedly provided with a connector at one end away from the scope sheath, and the connector includes a threaded block and a head body. Two catheters are installed in the head body at one end close to the arthroscope body. One end of the two catheters is connected to a connecting pipe, and one end of the connecting pipe is connected to a water inlet pipe. A water outlet pipe is fixedly provided in the head body at the rear end of the water inlet pipe.

[0008] The upper shell includes an upper shell body, a connecting block and a connecting joint.

[0009] Preferably, the number of the blocks is four, and the four blocks are arranged at equal intervals around the end of the lower shell body away from the fixed block. Four grooves are opened on the inner wall of the end of the upper shell body close to the lower shell body, and a card slot is opened on one side of the inner wall of the groove.

[0010] Preferably, when the upper shell body and the lower shell body are spliced ​​and combined, the four clamping blocks are first inserted into the grooves and then rotated and embedded into the clamping slots to complete the clamping and fixing.

[0011] Preferably, the number of the connecting blocks and connecting joints are both two, the two connecting blocks are respectively installed at the front and rear ends of the midpoint of one side of the inner wall of the upper shell body, the two connecting joints are respectively connected to the two connecting blocks, and the water inlet pipe and the water outlet pipe are respectively socketed with the two connecting blocks.

[0012] Preferably, when the arthroscope body is embedded in the sheath, a gap is formed between it and the inner wall of the sheath body, and two catheters pass through the threaded block and are located in the gap position at the upper and lower ends of the arthroscope body. The threaded block is a hollow ring and the outer wall is connected to the internal thread of the fixed block.

[0013] Preferably, when the mirror sheath is embedded in the fixed block, the two outer ring blocks at one end of the mirror sheath are rotated 90° so as to correspond to the two locking mechanisms on the fixed block. The upper end faces of the two outer ring blocks are provided with locking grooves, and the locking blocks are embedded in the locking grooves to complete the clamping and fixing.

[0014] Preferably, the second cavity corresponds to the installation guide space of the arthroscopic body, and the first cavity is connected to the water outlet pipe for extracting the mixed wastewater.

[0015] Preferably, the locking block, the extrusion block and the spring are all embedded in the fixed block and the lower end of the locking block passes through the inner wall of the fixed block.

[0016] Working principle: When using the disposable arthroscope, first insert the sheath into the lower shell and then rotate it 90 degrees so that the outer ring block on the outside of the sheath corresponds to the locking mechanism on the lower shell. At this time, the locking block of the locking mechanism is embedded in the locking groove at the upper end of the outer ring block, and then twist the locking bolt to move it inward to push the extrusion block, causing the deformation of the spring on the inside to change. At this time, the force required for the spring to deform under stress changes, thereby better locking and use; and after completing the locking installation of the sheath, then insert the arthroscope body into the No. 2 cavity of the sheath, and when the connector is embedded in the fixing block, rotate it to complete the threaded connection with the fixing block. At this time, the arthroscope body is located in the No. 2 cavity, and the water outlet pipe of the connector corresponds to the No. 1 cavity, and the catheter is located in the gap between the arthroscope body and the No. 2 cavity;

[0017] Secondly, after completing the installation of the arthroscope body, the upper shell and the lower shell are spliced ​​and combined. At this time, the water outlet pipe and the water inlet pipe at one end of the connecting head are respectively connected to the two connecting blocks inside the upper shell and correspond to the two connecting joints. The connecting joints are used to connect the flushing pump and the suction pump to complete the functions of water flushing and wastewater extraction.

[0018] The beneficial effects of the present invention are embodied in:

[0019] By providing a detachable disposable sheath, the sheath is used in conjunction with the arthroscope body, and the gap between the inner wall of the sheath and the outer wall of the arthroscope body can be used to achieve a flushing and cleaning effect, while another cavity in the sheath is used to extract and clean the mixed wastewater after flushing, avoiding affecting the image observation during surgery. At the same time, the sheath has an auxiliary angle adjustment function, so that the arthroscope body does not need to be separately adjusted in angle. The design of the joint ensures the integration of the arthroscope and avoids the difficulty of disinfection caused by the contamination of the joint structure design. The sheath is easy to install and disassemble. As a disposable item, it is less expensive than the traditional disposable arthroscope that is discarded after use, and can effectively save resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly describes the drawings required for the specific embodiments or the description of the prior art. Similar elements or parts are generally identified by similar reference numerals throughout the drawings. Elements or parts in the drawings are not necessarily drawn to scale.

[0021] Figure 1 This is a schematic diagram of the shaft side structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the partial cross-section explosion structure of the present invention;

[0023] Figure 3 For the present invention Figure 2A magnified schematic diagram of the structure at A;

[0024] Figure 4 It is a schematic diagram of the partial explosion structure of the present invention;

[0025] Figure 5 It is a schematic diagram of the combined cross-sectional structure of the present invention;

[0026] Figure 6 Schematic diagram of the mirror sheath structure of the present invention;

[0027] Figure 7 For the present invention Figure 5 A magnified schematic diagram of the structure at B;

[0028] Figure 8 It is a schematic diagram of the partial structure of the upper shell of the present invention;

[0029] Figure 9 Schematic diagram of the side view of the mirror sheath of the present invention.

[0030] In the accompanying drawings, 1-scope sheath; 2-lower shell; 3-arthroscopic body; 4-connecting head; 5-upper shell; 6-locking mechanism; 7-outer ring block; 8-locking groove; 9-card slot; 10-groove; 11-gap; 101-sheath body; 102-cavity No. 1; 103-guide wire; 104-cavity No. 2; 201-fixing block; 202-lower shell body; 203-card block; 401-threaded block; 402-head body; 403-water inlet pipe; 404-water outlet pipe; 405-connecting pipe; 406-catheter; 501-upper shell body; 502-connecting block; 503-connecting joint; 601-locking bolt; 602-spring; 603-locking block; 604-extrusion block. DETAILED DESCRIPTION

[0031] The following embodiments of the technical solution of the present invention will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention and are therefore only examples and are not intended to limit the scope of protection of the present invention.

[0032] It should be noted that, unless otherwise specified, the technical or scientific terms used in this application should have the common meanings understood by those skilled in the art to which the present invention belongs.

[0033] like Figure 1-9As shown, an embodiment of the present invention provides a disposable arthroscope, including a sheath 1, an arthroscope body 3 and an upper shell 5. The sheath 1 includes a sheath body 101. The interior of the sheath body 101 is divided into a first cavity 102 and a second cavity 104. Guide wires 103 are embedded on both sides of the interior of the sheath body 101. The end of the guide wire 103 away from the sheath body 101 is connected to a winding mechanism. The winding mechanism generates tension to promote angle adjustment of the end of the sheath body 101.

[0034] The winding mechanism uses a servo drive motor in conjunction with a winding roller. One end of the guide wire 103 is mounted on the winding roller. When the servo drive motor is started, the winding roller is driven to rotate, causing the guide wire 103 to be wound around the winding roller, thereby pulling the mirror sheath 1 to bend so that the angle of the end can be adjusted.

[0035] The outer ring block 7 is fixedly provided at the upper and lower ends of the outer wall of one end of the sheath tube body 101. The lower shell 2 is slidably sleeved on the outer wall of one end of the sheath tube body 101 close to the outer ring block 7. The lower shell 2 includes a fixed block 201, a lower shell body 202 and a clamping block 203. The upper and lower ends of the outer wall of the fixed block 201 are installed with a locking mechanism 6; wherein the fixed block 201 is installed on one side of the outer wall of the lower shell body 202. The fixed block 201 and the lower shell body 202 are a cylindrical structure of one large and one small. The function of the locking mechanism 6 is to complete the locking and clamping of the outer ring block 7 at the upper end of the mirror sheath 1, thereby completing the fixed installation effect of the mirror sheath 1 and making it detachable.

[0036] The locking mechanism 6 includes a locking bolt 601, a locking block 603, and an extrusion block 604. A spring 602 is connected between the locking block 603 and the extrusion block 604. The locking bolt 601 is threaded through the fixing block 201. That is, the locking bolt 601 can be twisted as needed during use to change the position and depth of the locking bolt 601 to achieve the desired distance adjustment.

[0037] A connector 4 is fixedly provided at one end of the arthroscope body 3 away from the sheath 1. The connector 4 includes a threaded block 401 and a head body 402. Two guide tubes 406 are installed inside the head body 402 at one end near the arthroscope body 3. One end of the two guide tubes 406 is connected to a connecting pipe 405, and one end of the connecting pipe 405 is connected to a water inlet pipe 403. A water outlet pipe 404 is fixedly provided inside the head body 402 at the rear end of the water inlet pipe 403; that is, the two guide tubes 406 are connected to the inside of the connecting pipe 405, and the connecting pipe 405 is connected to the water inlet pipe 403, thereby completing the communication relationship between the water inlet pipe 403 and the guide tubes 406;

[0038] The upper shell 5 includes an upper shell body 501, a connecting block 502 and a connecting joint 503; the connecting joint 503 is used to connect with an external water pump and a water injection pump to complete the injection of cleaning liquid and the extraction of waste water.

[0039] Reference Figure 1 、 Figure 2 、 Figure 5 and Figure 8 There are four clamping blocks 203, which are evenly spaced and arranged around the end of the lower shell body 202 away from the fixed block 201. Four grooves 10 are opened on the inner wall of the end of the upper shell body 501 close to the lower shell 2, and a clamping slot 9 is opened on one side of the inner wall of the groove 10;

[0040] Specifically, when in use, the upper shell body 501 and the lower shell body 202 are spliced ​​and combined, the four blocks 203 are first inserted into the groove 10 and then rotated and embedded into the slot 9 to complete the snap-fit ​​fixation. At this time, the blocks 203 are restricted in the slot 9, and the upper shell body 501 and the lower shell body 202 are snapped together to form a whole cylinder.

[0041] Reference Figure 2 、 Figure 4 、 Figure 5 , the number of the connecting blocks 502 and the connecting joints 503 are both two, the two connecting blocks 502 are respectively mounted on the front and rear ends of the midpoint of one side of the inner wall of the upper shell body 501, the two connecting joints 503 are respectively connected to the two connecting blocks 502, and the water inlet pipe 403 and the water outlet pipe 404 are respectively sleeved with the two connecting blocks 502;

[0042] Specifically, when in use, the two connecting joints 503 are connected to the external water injection pump and water extraction pump respectively. The water injection pump completes the injection of cleaning liquid into the water inlet pipe 403 to achieve the cleaning effect, and the water extraction pump uses the water outlet pipe 404 to extract the wastewater mixed with the affected area cleaning liquid and blood to avoid interfering with image observation.

[0043] Reference Figure 5 and Figure 7 When the arthroscope body 3 is embedded in the sheath 1, a gap 11 is formed between the arthroscope body 3 and the inner wall of the sheath body 101, and two guide tubes 406 pass through the threaded block 401 and are located at the gap 11 at the upper and lower ends of the arthroscope body 3. The threaded block 401 is hollow and annular, and its outer wall is threadedly connected to the inner surface of the fixing block 201. The second cavity 104 corresponds to the installation guide space of the arthroscope body 3, and the first cavity 102 is connected to the water outlet pipe 404 for extracting the mixed wastewater.

[0044] Specifically, when water injection and cleaning are performed, the cleaning liquid is injected from the conduit 406 and flows inward along the gap 11, ensuring the accurate guidance of the cleaning liquid and achieving a rapid flushing effect. The threaded connection of the threaded block 401 is not only simple and quick to install, making it detachable, but also has a secondary auxiliary extrusion and fixing effect on the outer ring block 7 of the outer wall of the mirror sheath 1. The rubber material is used and extrusion and fixation are performed, which can achieve a certain anti-water seepage effect.

[0045] Reference Figure 2 , Figure 3 , Figure 5 , Figure 6 When the mirror sheath 1 is embedded into the fixing block 201, the two outer ring blocks 7 at one end of the mirror sheath are rotated by 190° to correspond to the two locking mechanisms 6 on the fixing block 201, the upper end surface of each of the two outer ring blocks 7 is provided with a locking groove 8, and the locking block 603 is embedded into the locking groove 8 to complete the clamping and fixing; the locking block 603, the extrusion block 604 and the spring 602 are all embedded into the fixing block 201, and the lower end of the locking block 603 penetrates through the inner wall of the fixing block 201;

[0046] Specifically, in use, first, the mirror sheath 1 is inserted into the fixing block 201, and then rotated by 90° to make the outer ring block 7 connected to the outer side correspond to the locking mechanism 6, at this time, the locking bolt 601 is at the highest point, and the elastic deformation force of the spring 602 is in the maximum range, while rotating, the extrusion of the outer ring block 7 on the locking block 603 generates an extrusion thrust force to make it move upward, the spring 602 moves upward and drives the extrusion block 604 to move upward, when the locking groove 8 at the upper end of the outer ring block 7 corresponds to the locking block 603, the locking block 603 falls into the locking groove 8, at this time, the upper end spring 602 and the extrusion block 604 move downward, then the locking bolt 601 is twisted to move downward, in the process of moving downward, the extrusion block 604 is constantly pushed downward, the extrusion block 604 moves downward to extrude the spring 602 to reduce the elastic deformation range, so as to more forcefully push the locking block 603 at the lower end to complete the locking and installation.

[0047] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should be covered in the scope of the claims and the description of the present application.

Claims

1. A disposable arthroscope comprising a sheath (1), an arthroscope body (3) and an upper shell (5), characterized in that: The scope sheath (1) comprises a sheath body (101), the interior of the sheath body (101) is divided into a first cavity (102) and a second cavity (104), and guide wires (103) are embedded in both sides of the interior of the sheath body (101), wherein one end of the guide wire (103) away from the sheath body (101) is connected to a reeling mechanism, and the reeling mechanism generates a pulling force to cause the end of the sheath body (101) to adjust the angle; An outer ring block (7) is fixedly provided at the upper and lower ends of the outer wall of one end of the sheath tube body (101); a lower shell (2) is slidably sleeved on the outer wall of one end of the sheath tube body (101) close to the outer ring block (7); the lower shell (2) comprises a fixed block (201), a lower shell body (202) and a clamping block (203); and a locking mechanism (6) is installed at the upper and lower ends of the outer wall of the fixed block (201); The locking mechanism (6) comprises a locking bolt (601), a locking block (603) and an extrusion block (604); a spring (602) is connected between the locking block (603) and the extrusion block (604); and the locking bolt (601) is threadedly passed through the fixing block (201); A connector (4) is fixedly provided at one end of the arthroscope body (3) away from the sheath (1), the connector (4) comprising a threaded block (401) and a head body (402), two guide tubes (406) are installed inside the head body (402) at one end close to the arthroscope body (3), one end of the two guide tubes (406) is connected to a connecting pipe (405), one end of the connecting pipe (405) is connected to a water inlet pipe (403), and a water outlet pipe (404) is fixedly provided inside the head body (402) at the rear end of the water inlet pipe (403); The upper shell (5) comprises an upper shell body (501), a connecting block (502) and a connecting joint (503).

2. The disposable arthroscope according to claim 1, characterized in that: The number of the clamping blocks (203) is four, and the four clamping blocks (203) are arranged at equal intervals around one end of the lower shell body (202) away from the fixed block (201); four grooves (10) are provided on the inner wall of one end of the upper shell body (501) close to the lower shell body (2), and a clamping slot (9) is provided on one side of the inner wall of the groove (10).

3. The disposable arthroscope according to claim 2, characterized in that: When the upper shell body (501) and the lower shell body (202) are spliced ​​and assembled, the four clamping blocks (203) are first inserted into the groove (10) and then rotated and embedded into the clamping slot (9) to complete the clamping and fixing.

4. The disposable arthroscope according to claim 1, characterized in that: The number of the connecting blocks (502) and the connecting joints (503) are both two. The two connecting blocks (502) are respectively mounted at the front and rear ends of the midpoint of one side of the inner wall of the upper shell body (501). The two connecting joints (503) are respectively connected to the two connecting blocks (502). The water inlet pipe (403) and the water outlet pipe (404) are respectively sleeved with the two connecting blocks (502).

5. The disposable arthroscope according to claim 1, characterized in that: When the arthroscope body (3) is embedded in the sheath (1), a gap (11) is formed between the arthroscope body (3) and the inner wall of the sheath body (101), and two guide tubes (406) pass through the threaded block (401) and are located at the gap (11) at the upper and lower ends of the arthroscope body (3). The threaded block (401) is hollow and annular, and the outer wall is connected to the inner thread of the fixing block (201).

6. The disposable arthroscope according to claim 1, characterized in that: When the mirror sheath (1) is embedded in the fixed block (201), the mirror sheath (1) is rotated 90 degrees so that two outer ring blocks (7) at one end thereof correspond to two locking mechanisms (6) on the fixed block (201), and the upper end surfaces of the two outer ring blocks (7) are each provided with a locking groove (8), and the locking block (603) is embedded in the locking groove (8) to complete the clamping fixation.

7. The disposable arthroscope according to claim 1, characterized in that: The second cavity (104) corresponds to the installation guide space of the arthroscopic body (3), and the first cavity (102) is connected to the water outlet pipe (404) for extracting the mixed wastewater.

8. The disposable arthroscope according to claim 1, characterized in that: The locking block (603), the extruding block (604) and the spring (602) are all embedded in the fixing block (201), and the lower end of the locking block (603) passes through the inner wall of the fixing block (201).

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