Disposable arthroscope

Abstract

The utility model relates to the technical field of endoscopic surgical instruments, in particular to a disposable arthroscope which comprises a sheathing canal main body provided with a hollow cavity, a sheathing canal seat arranged at the tail end, a plug arranged at the head end, an observation channel and an instrument channel which are communicated with the hollow cavity and arranged on the plug, and a miniature camera fixedly arranged in the observation channel. A control line connected with the miniature camera penetrates through the hollow cavity to be fixed in the sheath tube seat, a line tube for the control line to penetrate through is arranged at one end, close to the sheath tube body, of the observation channel, the miniature camera abuts against the line tube, a mounting hole capable of containing the sheath tube is formed in the sheath tube seat, and the tail end of the miniature camera is inserted into the mounting hole. The sheath tube base is further provided with an instrument hole and a line hole which are communicated with the mounting hole, and the control line is fixedly arranged in the line hole. According to the disposable arthroscope, the double-channel plug is arranged at the head end of the sheathing canal, and an observation channel and an instrument channel are integrated on the same sheathing canal, so that the observation view can better meet the operation requirement, and the operation efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to endoscope surgical instrument technical field, especially one -off arthroscope. BACKGROUND

[0002] Arthroscope is an optical instrument for observing the internal structure of joint, and is an endoscope for diagnosing and treating joint diseases. Through arthroscope, the internal structure of joint can be observed comprehensively, so that many internal structures and lesions of joint can be directly observed and treated, and the trauma is more subtle than that of open surgery. With the gradual popularization of endoscope technology in China, especially the rapid development of minimally invasive medical technology, arthroscope technology has become a standard diagnostic method and treatment technology, and constitutes an important part of joint surgery.

[0003] When doing arthroscopic surgery, first, a micro-invasive surgical channel is established at the part of the patient needing surgery by a sheath, and an endoscope passes through the channel for observation, and a surgical instrument passes through another channel established by another sheath to operate on the target tissue. This surgical method requires medical personnel to control the shooting angle of the endoscope and the surgical instrument at the same time, and good cooperation is required to ensure the smooth progress of the surgery. Obviously, the actual operation is relatively complicated, and it is difficult to cooperate well. Moreover, at least two incisions need to be made on the surface of the patient to establish the surgical channel and the observation channel. Therefore, there is an urgent need for a device that can integrate the observation channel and the surgical channel. SUMMARY

[0004] In order to solve the problem that the existing sheath only has a single channel and the use is limited, the utility model provides a one -off arthroscope, which integrates the observation channel and the instrument channel on the same sheath by setting a double-channel plug at the head end of the sheath tube, so that the observation field of view better meets the needs of surgery, thereby improving the efficiency of surgery.

[0005] The utility model provides one -off arthroscope, including the sheath tube main part that is equipped with hollow cavity, sheath tube main part has a head end and a tail end, the tail end is provided with sheath tube seat, the head end is provided with the plug, is provided with the observation channel and instrument channel with hollow cavity communication on the plug. By integrating the camera on the sheath tube, more space is reserved for the instrument channel, and better surgical field of view can also be provided.

[0006] Further, a miniature camera is fixedly arranged in the observation channel, and a control line connected to the miniature camera is fixed in the sheath tube seat through the hollow cavity. The miniature camera is fixedly installed in the observation channel, which eliminates the trouble of separately establishing an observation channel.

[0007] Further, the observation channel is provided with a wire tube near one end of the sheath tube main part, and the miniature camera abuts against the wire tube. The miniature camera is limited in the observation channel by the wire tube.

[0008] Further, the sheath seat is provided with a mounting hole for accommodating the sheath, the tail end is inserted into the mounting hole, the sheath seat is further provided with an instrument hole and a wire hole in communication with the mounting hole, and the control wire is fixedly arranged in the wire hole.

[0009] Further, the plug is provided with an extension section close to one end of the sheath body, the diameter of the extension section is smaller than that of the plug, and the extension section extends into the sheath body. The installation of the plug is completed through the plug-in cooperation of the extension section and the sheath body.

[0010] Further, a limiting step is formed between the extension section and the plug, the limiting step is provided with an insertion block, and the sheath body is correspondingly provided with an insertion groove matched with the insertion block. The insertion block and the insertion groove are correspondingly provided with two groups and are symmetrically arranged on both sides of the extension section.

[0011] Further, the extension section is provided with an arc-shaped wedge surface close to one side of the sheath body, facilitating the extension of the instrument. The arc-shaped wedge surface facilitates the guidance of the extended instrument and the accurate introduction of the instrument into the instrument channel.

[0012] Further, the sheath seat is further connected with a handle, the sheath seat is externally provided with a positioning ring, the handle is a first half shell and a second half shell spliced together, and an annular positioning groove for accommodating the positioning ring is formed between the first half shell and the second half shell spliced together. The installation of the handle and the sheath seat is completed through the spliced clamping mode.

[0013] Further, the handle is further provided with an instrument guide sleeve, and the sheath seat is provided with a guide hole at the end portion. The instrument guide sleeve is inserted from the tail end of the handle and extends into the guide hole of the sheath seat. The handle is convenient for the operation of the mirror sheath, and the instrument guide sleeve is convenient for the extension of the instrument from the rear end of the handle.

[0014] Further, the instrument guide sleeve is provided with a through instrument guide hole, and the instrument guide hole is in communication with the instrument hole of the sheath seat. The instrument extends from the guide hole of the guide sleeve, passes through the hollow cavity, and extends out of the instrument channel.

[0015] The beneficial effects of the utility model lie in:

[0016] The utility model provides a disposable arthroscope, through setting up the plug of double channels at the sheath head end, integrates the observation channel and the instrument channel on the same sheath, and installs the camera into the observation channel in advance, makes the operation visual field move along with the operation instrument, is convenient for better cooperation operation demand, thereby improves operation efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or the prior art description, and obviously, the drawings described below are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0018] Figure 1 is the external structure diagram of the arthroscope;

[0019] Figure 2 is the internal structure diagram of the arthroscope;

[0020] Figure 3 is the first angle schematic diagram of the plug;

[0021] Figure 4 is the second angle schematic diagram of the plug;

[0022] Figure 5 is the structure schematic diagram of the handle;

[0023] In the figure, 1 is a sheath body, 11 is a head end, 12 is a tail end, 2 is a sheath seat, 21 is a mounting hole, 22 is an instrument hole, 23 is a wire hole, 24 is a guide hole, 25 is a positioning ring, 3 is a plug, 31 is an observation channel, 32 is an instrument channel, 4 is a miniature camera, 5 is a control wire, 6 is a wire tube, 7 is an extension section, 71 is a plug-in block, 72 is a plug-in slot, 73 is an arc-shaped wedge surface, 8 is a handle, 81 is an annular positioning slot, 9 is an instrument introduction sleeve, 91 is an instrument introduction hole. DETAILED DESCRIPTION

[0024] The technical solutions of the present application will be described below in conjunction with the drawings, and obviously, the described embodiments are some embodiments of the present application, rather than all the embodiments.

[0025] The traditional arthroscope system includes an arthroscope, a puncture sheath and a handle, wherein the puncture sheath includes a sheath and a puncture needle, and the puncture needle and the sheath complete the puncture process as a whole, after the puncture is completed, the sheath remains in place, and the puncture needle is taken out and placed into a disposable arthroscope along the sheath for observation. The use mode of the above arthroscope is described in detail in the patent with the publication number CN208492045U, which will not be described here.

[0026] In order to integrate the observation channel 31 and the instrument channel 32 on the same mirror sheath, in order to facilitate operation, a disposable arthroscope is designed, as shown in Figure 1 , which includes a sheath body 1 provided with a hollow cavity, the sheath body 1 has a head end 11 and a tail end 12, and the tail end 12 is provided with a sheath seat 2. The sheath body 1 is fixedly connected with the handle 8 through the sheath seat 2 of the tail end 12.

[0027] As Figure 2 shown, the core of the technical solution is that the head end 11 is provided with a plug 3, and the plug 3 is provided with an observation channel 31 and an instrument channel 32 which communicate with the hollow cavity. There is a step between the end opening of the conventional sheath and the built-in arthroscope, which is easy to be caught by the skin or ligament tissue and has large resistance. After the plug 3 is used to block the end of the sheath body 1, the sheath head end 11 is a smooth round head structure, which has smaller resistance than the conventional sheath and is easier to be implanted into the target position. Moreover, the plug 3 structure integrates the observation channel 31 and the instrument channel 32, which avoids the trouble of mutual cooperation in the conventional double-hand operation. The observation channel 31 always follows the instrument, which provides a better surgical field of view. A miniature camera 4 for transmitting intra-articular pictures is pre-installed in the observation channel 31, and does not need to be subsequently inserted. When the sheath body 1 is inserted into position, the instrument can be extended from the instrument channel 32 to perform surgical operation.

[0028] In order to be more convenient for operation, the miniature camera 4 is pre-fixed in the observation channel 31, and a control line 5 connected with the miniature camera 4 is fixed in the sheath seat 2 through the hollow cavity. In order to prevent the miniature camera 4 from being taken out of the channel, a wire tube 6 through which the control line 5 passes is arranged at the end of the observation channel 31 close to the sheath body 1, and the miniature camera 4 abuts against the wire tube 6.

[0029] The sheath seat 2 fixes the sheath while not hindering the extension of the instrument, so an installation hole 21 which can accommodate the sheath is arranged on the sheath seat 2, and the tail end 12 is inserted into the installation hole 21. An instrument hole 22 and a wire hole 23 which communicate with the installation hole 21 are also arranged on the sheath seat 2, and the control line 5 is fixed in the wire hole 23.

[0030] As Figure 3 and 4 shown, in order to facilitate the installation of the plug 3, an extension section 7 is arranged at the end of the plug 3 close to the sheath body 1, the diameter of the extension section 7 is smaller than that of the plug 3, and the extension section 7 extends into the sheath body 1. The installation of the plug 3 and the sheath is completed by means of insertion.

[0031] In order to make the sheath insertion more smooth, a limiting step is formed between the extension section 7 and the plug 3, and an insertion block 71 is arranged on the limiting step. An insertion groove 72 which is adapted to the insertion block 71 is correspondingly arranged on the sheath body 1, and the outer surfaces of the plug 3 and the sheath body 1 are flush. The insertion block 71 and the insertion groove 72 are correspondingly arranged in two groups and symmetrically arranged on both sides of the extension section 7, so that the insertion stability is better, and the outer surfaces of the plug 3 and the sheath body 1 are flush, which can avoid being caught by the tissue during the extension process and is easier to be implanted into the surgical position.

[0032] To facilitate instrument insertion, the extension section 7 has an arc-shaped wedge surface 73 on the side near the sheath body 1 to facilitate instrument insertion. The arc-shaped wedge surface 73 is inclined towards the instrument channel 32. When the instrument is inserted, it can be smoothly inserted into the instrument channel 32 along the arc-shaped wedge surface 73, eliminating the trouble of aligning the hole and thus improving surgical efficiency.

[0033] like Figure 5 As shown, for ease of operation, a handle 8 is also connected to the sheath seat 2. A positioning ring 25 is provided on the outside of the sheath seat 2. The handle 8 is composed of a first half-shell and a second half-shell, and an annular positioning groove 81 is formed between the first half-shell and the second half-shell to accommodate the positioning ring 25. The installation of the sheath seat 2 and the handle 8 is completed by the first half-shell and the second half-shell fastening together. To prevent the sheath seat 2 from rotating, the contact surfaces between the sheath seat 2 and the first half-shell and the second half-shell are both flat.

[0034] To further facilitate instrument insertion, an instrument insertion sleeve 9 is provided inside the handle 8, and a guide hole 24 is provided at the end of the sheath seat 2. The instrument insertion sleeve 9 is inserted from the tail of the handle 8 and extends into the guide hole 24 of the sheath seat 2. The instrument insertion sleeve 9 has a through instrument insertion hole 91, which communicates with the instrument hole 22 of the sheath seat 2. The sheath seat 2 and the instrument insertion sleeve 9 inside the handle 8 abut against each other to ensure stability. The instrument can be directly inserted from the instrument insertion hole 91 at the tail of the handle 8, passing through the instrument insertion hole 91 of the instrument insertion sleeve 9, the instrument hole 22 of the sheath seat 2, and the hollow cavity, and then extending out from the instrument channel 32 of the plug 3 for surgical operations.

[0035] The above description is illustrative only and not restrictive of this utility model. Those skilled in the art will understand that many modifications, variations or equivalents can be made without departing from the spirit and scope defined by the appended claims, and all such modifications, variations or equivalents will fall within the protection scope of this utility model.

Claims

1. A disposable arthroscope comprising a sheath body (1) provided with a hollow cavity, characterized in that: The sheath body (1) has a head end (11) and a tail end (12), the tail end (12) is provided with a sheath seat (2), the head end (11) is provided with a plug (3), the plug (3) is provided with an observation channel (31) and an instrument channel (32) which communicate with the hollow cavity.

2. The disposable arthroscope according to claim 1, wherein: The observation channel (31) is fixedly provided with a micro camera (4), and a control line (5) connected with the micro camera (4) passes through the hollow cavity and is fixed in the sheath seat (2).

3. The disposable arthroscope according to claim 2, wherein: The observation channel (31) is provided with a wire tube (6) through which the control line (5) passes, near one end of the sheath body (1), and the micro camera (4) abuts against the wire tube (6).

4. The disposable arthroscope according to claim 2, wherein: The sheath seat (2) is provided with a mounting hole (21) capable of accommodating the sheath, the tail end (12) is inserted into the mounting hole (21), and the sheath seat (2) is also provided with an instrument hole (22) and a wire hole (23) which communicate with the mounting hole (21), and the control line (5) is fixedly arranged in the wire hole (23).

5. The disposable arthroscope of claim 1, wherein: The plug (3) is provided with an extension section (7) near one end of the sheath body (1), the diameter of the extension section (7) is smaller than that of the plug (3), and the extension section (7) extends into the sheath body (1).

6. The disposable arthroscope according to claim 5, wherein: A limiting step is formed between the extension section (7) and the plug (3), the limiting step is provided with a plug-in block (71), the sheath body (1) is correspondingly provided with a plug-in groove (72) matched with the plug-in block (71), and the outer surfaces of the plug (3) and the sheath body (1) are flush.

7. The disposable arthroscopic instrument according to claim 5, wherein: The extension section (7) is provided with an arc-shaped wedge surface (73) on one side close to the sheath body (1) to facilitate the extension of the instrument.

8. The disposable arthroscopic system of claim 1, wherein: The sheath seat (2) is also connected with a handle (8), the sheath seat (2) is provided with a positioning ring (25) outside, the handle (8) is a first half shell and a second half shell which are spliced, and an annular positioning groove (81) capable of accommodating the positioning ring (25) is formed between the first half shell and the second half shell.

9. The disposable arthroscopic instrument according to claim 8, wherein: An instrument guide sleeve (9) is also arranged inside the handle (8), and the sheath seat (2) is provided with a guide hole (24) at the end, the instrument guide sleeve (9) is inserted into the guide hole (24) of the sheath seat (2) from the tail of the handle (8).

10. The disposable arthroscopic system of claim 9, wherein: The instrument guide sleeve (9) is provided with an instrument guide hole (91) penetrating through, and the instrument guide hole (91) communicates with the instrument hole (22) of the sheath seat (2).

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