Integrated sleeve for joint lavage and release

Abstract

The invention discloses an integrated sleeve for joint irrigation and loosening, relates to the technical field of medical instruments, and solves the problem that the existing joint loosening sleeve is easy to leak after being installed with a valve and is difficult to disinfect after adding a sealing rubber ring. The invention comprises a hollow outer tube and a solid inner core, wherein the outer tube and the inner core are nested, the outer tube is a hollow cylinder with two ends open and one end of the cylinder is expanded, the inner core comprises an inner core component A and an inner core component B, the inner core is a solid cylinder formed by splicing the inner core component A and the inner core component B, one end of the inner core is expanded and the expanded end of the inner core is on the same side as the expanded end of the outer tube, and a liquid inlet pipe and a liquid outlet pipe are provided on the side of the expanded part of the outer tube, the invention can make larger tissue fragments be sucked out of the body smoothly, and the inlet and outlet of the flushing liquid are controlled by a separate needle core structure, so as to avoid water leakage of the traditional valve structure.

Description

Technical Field

[0001] The present invention relates to the technical field of medical instruments, and more particularly to an integrated sleeve for joint lavage and release. Background Art

[0002] Joint release cannula is a commonly used medical device for joint adhesion release and lavage. The main operating steps of traditional joint adhesion release and lavage are:

[0003] 1. Establish an arthroscopic approach, complete arthroscopic examination in the joint cavity, observe whether the synovium, cartilage, ligaments and other accessory structures in the joint have lesions and damage; determine the adhesion and other lesions in the joint;

[0004] 2. Under arthroscopic monitoring, establish a second approach, use blunt instruments to loosen the adhesions within the joint, and use an intra-articular planer and negative pressure system to remove debris and necrotic tissue within the joint;

[0005] 3. Repeatedly flush the joint cavity with saline through the arthroscopic cannula;

[0006] 5. After the operation, remove the instruments, suture the access incision, and bandage the operated joint.

[0007] The above operations need to be completed under arthroscopic monitoring, and at least two incisions must be established. The operation is relatively complicated, and the operating physician must have the corresponding endoscopic operation qualifications. The present invention can not only solve the problems of non-visual joint cavity lavage, joint capsule loosening and pathological examination, and flush out larger tissue fragments in the joint, but also only requires the establishment of a smaller surgical incision, which causes less damage to the patient's body and is more conducive to the patient's postoperative recovery. In addition, the present invention only requires the operating physician to have general orthopedic surgery qualifications, and does not require special endoscopic operation qualifications, which effectively reduces the threshold for realizing technical operations. Summary of the invention

[0008] The purpose of the present invention is to provide a joint lavage and release integrated sleeve in order to solve the problem that the existing joint release sleeve is easy to leak after being equipped with a valve and is difficult to disinfect after adding a sealing rubber ring.

[0009] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions:

[0010] A joint irrigation and release integrated sleeve comprises a hollow outer tube and a solid inner core, the outer tube and the inner core are nested, the outer tube is a hollow cylinder with two ends open and one end of the cylinder is expanded, the inner core comprises an inner core component A and an inner core component B, the inner core is a solid cylinder formed by splicing the inner core component A and the inner core component B, one end of the inner core is expanded and the expanded end of the inner core is on the same side as the expanded end of the outer tube, a liquid inlet pipe and a liquid outlet pipe are provided on the side of the expanded part of the outer tube, and the liquid inlet pipe and the liquid outlet pipe are both connected to a water pump for conveying a solution.

[0011] Working principle: During use, the present invention first inserts the spliced ​​inner core into the outer tube, and the inner core completely fills and seals the outer tube. After insertion into the human body, the inner core component B is pulled out. At this time, there is a gap between the outer tube and the inner core, the inlet port is opened and the outlet port is closed, and the inlet tube begins to transport solutions such as physiological saline into the human body; after the solution is input, the inner core component A is rotated 180 degrees, at this time the inlet port is closed and the outlet port is opened, and a large amount of tissue fragments in the body are extracted along with the body fluids. After the tissue fragments are extracted, the inner core component B is inserted, and then the present invention is completely extracted from the body, and the treatment is completed.

[0012] Preferably, the central angle of the inner core component A is 180-270°, and the central angle of the inner core component B is 90-180°.

[0013] Preferably, two opposite through holes are provided on the side surface of the unexpanded end of the outer tube.

[0014] Preferably, the diameters of the liquid inlet pipe and the liquid outlet pipe gradually decrease toward the tail end, and the tail ends are both provided with external threads for externally connecting a hose.

[0015] Preferably, the diameters of the liquid inlet pipe and the liquid outlet pipe gradually decrease toward the tail end, and the tail ends are both provided with external threads for connecting an external hose.

[0016] Preferably, the angles formed by the liquid inlet pipe, the liquid outlet pipe and the expanded end of the outer pipe are acute angles.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. The present invention controls the inlet and outlet of the flushing liquid through a separate needle core structure to replace the valve control, thereby avoiding water leakage of the traditional valve structure, and there is no rubber sealing ring in the liquid inlet pipe and the liquid outlet pipe, thereby avoiding incomplete disinfection and residual bacteria.

[0019] 2. The cannula creates a shearing effect, which can cut and bring out the tissue that the physician needs to examine, thus playing the role of needle aspiration biopsy.

[0020] 3. The tip of the sleeve is open and the side is open to improve the flushing and suction efficiency and reduce blockage.

[0021] 4. The blunt bullet-like design of the cannula tip avoids tissue damage and creates favorable conditions for non-visualized operations.

[0022] 5. After the sleeve enters the joint as a whole, the material strength is guaranteed to be sufficient, and the joint capsule can be bluntly released at multiple angles. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of the present invention;

[0024] Figure 2 is a schematic diagram of the structure of the outer tube;

[0025] Figure 3 It is a front view of the structural schematic diagram of the inner core component A;

[0026] Figure 4 It is a front view of the structural schematic diagram of the inner core component B;

[0027] Figure 5 It is a left view of the structural schematic diagram of the inner core component A;

[0028] Figure 6 It is a left view of the structural schematic diagram of the inner core component B;

[0029] Reference numerals: 1 - outer tube; 2 - inner core; 21 - inner core component A; 22 - inner core component B; 3 - liquid outlet pipe; 4 - liquid inlet pipe; 5 - through hole; 6 - water stop valve. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0031] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. In addition, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0033] In the description of the embodiments of the present invention, it should be noted that the terms "inside", "outside", "upper", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the inventive product is usually placed when used. They 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.

[0034] Example 1

[0035] like Figure 1-2 As shown, this embodiment provides an integrated sleeve for joint irrigation and release, including a hollow outer tube 1 and a solid inner core 2, the outer tube 1 and the inner core 2 are nested, the outer tube 1 is a hollow cylinder with openings at both ends and one end of the cylinder is expanded, the inner core 2 includes an inner core component A21 and an inner core component B22, the inner core 2 is a solid cylinder formed by splicing the inner core component A21 and the inner core component B22, one end of the inner core 2 is expanded and the expanded end of the inner core 2 is on the same side as the expanded end of the outer tube 1, and a liquid inlet pipe 3 and a liquid outlet pipe 4 are provided on the side of the expanded part of the outer tube 1, and the liquid inlet pipe 3 and the liquid outlet pipe 4 are both connected to a water pump for conveying the solution.

[0036] The outer tube 1 is about 100-150 mm long, with an inner diameter of 2.0-3.5 mm, an outer diameter of 2.5-4.2 mm, a wall thickness of 0.5-0.7 mm, and a blunting treatment at the opening (similar to a bullet structure, but hollow).

[0037] The length of the expanded part of the outer tube 1 is about 45-50 mm, the inner diameter is the same as that before expansion, and the wall thickness of the expanded part is about 2-4 mm;

[0038] The tail end of the expanded portion of the outer tube 1 is provided with an extension structure, and its edge is blunted so that the doctor can plug the hole at the end with his fingers when the tube is extended to avoid water leakage.

[0039] Example 2

[0040] like Figure 3-6 As shown, this embodiment is further improved on the basis of Embodiment 1, specifically, the central angle of the inner core component A21 is 180-270°, and the central angle of the inner core component B22 is 90-180°.

[0041] The inner core 2 is as a whole Figure 5 , Figure 6 The assembled solid structure (cross section) is actually the inner core component A21 and the inner core component B22, which are devices placed in the outer tube 1 and can rotate in the outer tube 1.

[0042] Among them: the total length of the inner core 2 is 3.0-5.0mm longer than the outer tube 1, and its tip is a bullet-like structure, which forms a well-fitting and tight bullet structure with the outer tube 1. In this way, the inner core 2 can be implanted into the outer tube 1 to form a whole, and can bluntly enter the joint capsule through the incised joint capsule approach; and it can also close the water inlet channel of the liquid inlet tube 3 after the inner core 2 is implanted into the outer tube 1 to form a whole, without worrying about water leakage after the valve is set on the liquid inlet tube 3; in addition, the inner core component A21 and the inner core component B22 can be rotated together in the outer tube 1, or only the inner core component A21 can be left in the outer tube 1. When the inner core component A21 rotates, the water inlet and outlet holes can be opened and closed due to different rotation positions; finally, when the inner core component A21 rotates alone in the outer tube 1, its tip forms a shearing effect with the outer tube 1, which can cut and bring out some tissues that the doctor needs to examine, playing the role of needle aspiration biopsy.

[0043] The expanded portion of the inner core 2 is about 45-50 mm long, mainly for easy gripping.

[0044] The center angle of the cross section of the inner core component A21 is 240°, and the center angle of the cross section of the inner core component B22 is 120°.

[0045] The side surface of the unexpanded end of the outer tube 1 is provided with two opposite through holes 5 .

[0046] The through hole 5 is about 5 cm from the end, with two side openings distributed at 180 degrees, one of which is parallel to the inner hole of the liquid inlet tube 3. The holes are elliptical in structure, arranged longitudinally, with a long diameter of about 1.5-1.7 mm and a short diameter of about 1.0-1.2 mm.

[0047] Example 3

[0048] like Figures 1 to 3 As shown, this embodiment is further improved on the basis of Embodiment 1 and Embodiment 2, specifically, the angles formed by the liquid inlet pipe 3, the liquid outlet pipe 4 and the expanded end of the outer tube 1 are acute angles.

[0049] The outside of the liquid inlet pipe 3 and the liquid outlet pipe 4 is a wide screw buckle structure with a gradually decreasing outer diameter at the tail end, mainly to facilitate compatibility with external water inlet plastic pipes of different diameters. The thread spacing of the screw buckle is printed at 1-1.5mm, the thread depth is about 0.5mm, and the threads are blunt structures, not sharp, to avoid scratching the hands of medical staff.

Claims

1. An integrated sleeve for joint lavage and release, comprising a hollow outer tube (1) and a solid inner core (2), wherein the outer tube (1) and the inner core (2) are nested, characterized in that: The outer tube (1) is a hollow cylinder with two ends open and one end of the cylinder is expanded; the inner core (2) comprises an inner core component A (21) and an inner core component B (22); the inner core (2) is a solid cylinder formed by splicing the inner core component A (21) and the inner core component B (22); one end of the inner core (2) is expanded; the unexpanded portion of the inner core (2) is inserted into the outer tube (1) and the expanded portion is close to the expanded end of the outer tube (1); a liquid inlet pipe (4) and a liquid outlet pipe (3) are provided on the side of the expanded portion of the outer tube (1); the liquid inlet pipe (4) and the liquid outlet pipe (3) are both connected to a water pump for conveying a solution; The center angle of the inner core component A (21) is 180 to 270°, and the center angle of the inner core component B (22) is 90 to 180°; Two opposite through holes (5) are provided on the side surface of the unexpanded end of the outer tube (1).

2. The integrated sleeve for joint lavage and release according to claim 1, characterized in that: The diameters of the liquid inlet pipe (4) and the liquid outlet pipe (3) gradually decrease towards the tail end, and the tail ends are both provided with external threads for externally connecting a rubber hose.

3. The integrated sleeve for joint lavage and release according to claim 2, characterized in that: The angles formed by the liquid inlet pipe (4) and the liquid outlet pipe (3) and the expanded end of the outer pipe (1) are acute angles.

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