One-step arthroscope approach builder

Abstract

The utility model provides a one-step arthroscope approach builder, and belongs to the field of medical instruments. The problems that secondary injury is easily caused and the efficiency is low due to troublesome second approach operation of minimally invasive surgery are solved. The device comprises a sleeve, and an inner core is coaxially arranged in the sleeve; the blade is rotationally connected to the inlet end of the sleeve through a rotary assembly, the inner core is in contact with the blade when extending out of the sleeve from the inlet end, the blade and the sleeve are coaxial, and when the inner core retracts into the sleeve from the inlet end, the rotary assembly is used for driving the blade to rotate to form a certain angle with the sleeve and locking the position of the blade. The method is mainly used for arthroscope approach establishment.

Description

Technical Field

[0001] The utility model belongs to the field of medical instruments, in particular to a one-step arthroscopic approach builder. Background Art

[0002] Arthroscopic surgery has become popular in clinical practice and has been accepted and recognized by patients as a minimally invasive surgery. Generally, arthroscopic surgery requires the establishment of at least two approaches, and the establishment of the second approach and subsequent approaches are all under direct vision of the arthroscope.

[0003] When establishing the second approach and subsequent approaches, it is necessary to first use a lumbar puncture needle to position the joint under direct vision of the arthroscopy. After positioning is good, a blade is used to make an opening in the skin at the location, and then a straight hemostat is used to bluntly expand the opening so that the operating instruments can enter the joint for surgical operation. It can be seen that the establishment of the second approach and subsequent approaches is relatively cumbersome, and the secondary opening of the blade will cause secondary damage to this place and is inefficient. Therefore, this patented technology attempts to simplify the above process, which can save surgical time and provide patients with a better surgical experience. Summary of the invention

[0004] In view of this, the utility model aims to provide a one-step arthroscopic approach establishment device to solve the problem that the second approach of minimally invasive surgery is cumbersome to operate, easily causes secondary damage and is inefficient.

[0005] To achieve the above purpose, the utility model adopts the following technical solution: a one-step arthroscopic approach builder, comprising:

[0006] A sleeve having an inner core coaxially disposed therein;

[0007] The blade is rotatably connected to the entry end of the sleeve through a rotating assembly. When the inner core extends out of the sleeve from the entry end, it contacts the blade and makes the blade coaxial with the sleeve. When the inner core is retracted into the sleeve from the entry end, the rotating assembly is used to drive the blade to rotate to a certain angle with the sleeve and lock the blade position.

[0008] Furthermore, the sleeve and the inner core are both cylindrical.

[0009] Furthermore, a locking assembly is provided on the side of the inner core away from the access end, and the locking assembly is used to lock the relative position of the sleeve and the inner core.

[0010] Furthermore, the locking assembly is a frustum.

[0011] Furthermore, the locking component is a screw.

[0012] Furthermore, the locking component is a protrusion and a groove, the protrusion is arranged on the outer wall of the inner core, the groove is arranged on the inner wall of the sleeve, and the protrusion and the groove are engaged with each other.

[0013] Furthermore, when the inner core is retracted from the access end into the sleeve, the blade is rotated to form 90 degrees with the sleeve.

[0014] Furthermore, the rotating component is a torsion spring, and the blade is provided with a rotating shaft rotatably connected to the sleeve and connected to the torsion spring through the rotating shaft.

[0015] Furthermore, the rotating shaft and the sleeve are connected via a bearing.

[0016] Furthermore, the entry end of the sleeve is provided with a closed cavity for accommodating a torsion spring.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] 1. When using this erector, after confirming the position, the blade can change its angle and directly open the skin during the withdrawal process, which can save one step of operation, improve efficiency and reduce secondary damage to the patient during the secondary entry process, thus improving the treatment experience;

[0019] 2. This builder simplifies the traditional approach establishment process when used;

[0020] 3. When the builder is performing an approach, the blade can also serve as an approach tool for needle insertion and positioning. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure from the first perspective of the one-step arthroscopic approach builder of the utility model;

[0023] Figure 2 It is a schematic diagram of the stereoscopic structure of the one-step arthroscopic approach builder according to the utility model from a second viewing angle;

[0024] Figure 3 It is a top view of the one-step arthroscopic approach builder of the utility model;

[0025] Figure 4 For the utility model Figure 3 AA section view;

[0026] Figure 5 This is a diagram showing the blade of the utility model rebounding to a state where the blade is 90 degrees to the sleeve;

[0027] Sleeve 1; inner core 2; blade 3; rotating component 4. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely explain the technical solutions in the embodiments of the utility model. It should be noted that the embodiments and features in the embodiments of the utility model can be combined with each other without conflict, and the embodiments described are only part of the embodiments of the utility model, not all of the embodiments.

[0029] It should be noted that the descriptions of the present invention regarding directions such as "left", "right", "left side", "right side", "upper", "lower", "top", "bottom", etc. are all defined based on the relationship between the orientations or positions shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the structure described must be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention. In the description of the present invention, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0030] In the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Specific implementation method one:

[0032] Referring to the accompanying drawings, the present embodiment is described, wherein the one-step arthroscopic approach builder comprises:

[0033] The sleeve 1 has an inner core 2 coaxially disposed therein; the sleeve 1 is disposed to provide a movable space for the inner core 2 so that the inner core 2 can be smoothly pulled and drawn in the sleeve 1 .

[0034] The blade 3 is rotatably connected to the access end of the sleeve 1 through the rotating assembly 4. When the inner core 2 extends out of the sleeve 1 from the access end, it contacts the blade 3 and makes the blade 3 coaxial with the sleeve 1. When the inner core 2 is retracted into the sleeve 1 from the access end, the rotating assembly 4 is used to drive the blade 3 to rotate to a certain angle with the sleeve 1 and lock the position of the blade 3. Through the setting of the rotating assembly 4, it can be ensured that when the inner core 2 is pulled out, the blade 3 is rotated to a position with a certain angle with the sleeve 1, so that in the process of pulling out the sleeve 1, the skin can be opened directly without the need for a secondary operation. In the extended state, the blade 3 is supported by the inner core 2 so that the blade 3 and the sleeve 1 remain coaxial, so that the blade 3 acts as a probe.

[0035] In this embodiment, the sleeve 1 and the inner core 2 are both cylindrical, or more precisely, needle-shaped with a relatively small diameter, which can reduce the pain of the patient during the access construction.

[0036] In this embodiment, a locking assembly is provided on the side of the inner core 2 away from the access end, and the locking assembly is used to lock the relative position of the sleeve 1 and the inner core 2. The locking assembly is provided to prevent the sleeve 1 and the inner core 2 from relative movement during the access construction process, to prevent the blade 3 from losing support and causing premature rotation, and to ensure the smooth progress of the access process.

[0037] In this embodiment, the locking component is a truncated cone. By setting the locking component as a truncated cone, and making the diameter of the truncated cone larger than the inner diameter of the casing 1, after the inner core 2 is inserted into the casing 1 and supports the blade 3, the truncated cone pushes against the end surface of the corresponding side casing 1 to form a limit, preventing the two from moving relative to each other, thereby ensuring the smooth construction of the access. A threaded hole can be set on the specific truncated cone, and then an external thread is set on the corresponding end of the casing 1, and the connection is made by thread matching. It can also be connected by welding.

[0038] In this embodiment, when the inner core 2 is retracted from the access end into the cannula 1, the blade 3 rotates to 90 degrees with the cannula 1. In this state, when the cannula 1 is withdrawn, the blade 3 will directly open the skin, which is very convenient and avoids the defects of secondary injury to the patient and low efficiency caused by the blade being inserted deeply for a second time. Of course, other angles that are conducive to cutting the skin can be selected according to actual needs and the length of the blade.

[0039] In this embodiment, the rotating assembly 4 is a torsion spring, and the blade 3 is provided with a rotating shaft rotatably connected to the sleeve 1 and connected to the torsion spring through the rotating shaft. The rotating assembly is set in the form of a torsion spring, so that the blade 3 can rebound smoothly and maintain the corresponding state. The torsion spring has low cost and high reliability, which is conducive to reducing costs and improving production convenience.

[0040] In this embodiment, the rotating shaft is connected to the sleeve 1 via a bearing, which can reduce the resistance of the blade 3 during its rotation.

[0041] In this embodiment, a closed cavity for accommodating a torsion spring is provided at the entry end of the sleeve 1. The closed cavity is provided to protect the torsion spring from tissue fluid and the like affecting the normal operation of the torsion spring, and to ensure that the blade 3 can rebound smoothly.

[0042] When in use, first insert the inner core 2 into the sleeve 1, and then extend it from the access end of the sleeve 1 to support the blade 3 in the rebound state so that the blade 3 rotates to a coaxial state with the sleeve 1. At this time, the locking component locks the relative position of the sleeve 1 and the inner core 2, and then the locked sleeve 1 and the inner core 2 are held and tried to enter together. If the position is correct at this time, the inner core 2 is pulled outwards. At this time, the blade 3 that has lost support will rotate to a certain angle with the sleeve 1 under the action of the rotating component 4, and the optimal angle is 90 degrees. Then the sleeve 1 is pulled out. During the pulling-out process, the blade 3 will open the skin. In one step, the establishment of the entry and the opening of the skin can be completed. Specific implementation method 2:

[0044] The only difference between this embodiment and the first embodiment is that the locking component is a screw. When the locking component is a screw, the sleeve 1 and the inner core 2 can be relatively fixed by the screw. Specifically, a threaded hole can be provided at the same position on the sleeve 1 and the inner core 2 in the radial direction, and the relative fixation of the two can be completed by screwing the screw into the threaded hole. Specific implementation method three:

[0046] The difference between this embodiment and the first embodiment is that the locking assembly is a protrusion and a groove, the protrusion is arranged on the outer wall of the inner core 2, the groove is arranged on the inner wall of the sleeve 1, and the protrusion and the groove are engaged. The protrusion should be set to a material with a certain toughness and can be deformed, so that when the protrusion is inserted into the groove, it can be limited, and when the inner core 2 is pulled out, it can also be separated from the groove smoothly, so as to ensure the smooth rebound of the blade 3.

[0047] The embodiments of the utility model disclosed above are only used to help explain the utility model. The embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. According to the content of this specification, many modifications and changes can be made. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model.

Claims

1. One-step arthroscopic approach builder, characterized by: include: A sleeve (1) having an inner core (2) coaxially arranged therein; The blade (3) is rotatably connected to the entry end of the sleeve (1) via a rotary assembly (4); when the inner core (2) extends out of the sleeve (1) from the entry end, it contacts the blade (3) and makes the blade (3) coaxial with the sleeve (1); when the inner core (2) is retracted from the entry end into the sleeve (1), the rotary assembly (4) is used to drive the blade (3) to rotate to a certain angle with the sleeve (1) and lock the position of the blade (3).

2. The one-step arthroscopic approach builder according to claim 1, characterized in that: The sleeve (1) and the inner core (2) are both cylindrical.

3. The one-step arthroscopic approach builder according to claim 1, characterized in that: A locking component is provided on the side of the inner core (2) away from the access end, and the locking component is used to lock the relative position of the sleeve (1) and the inner core (2).

4. The one-step arthroscopic approach builder according to claim 3, characterized in that: The locking component is a round table.

5. The one-step arthroscopic approach builder according to claim 3, characterized in that: The locking component is a screw.

6. The one-step arthroscopic approach builder according to claim 3, characterized in that: The locking component comprises a protrusion and a groove, wherein the protrusion is arranged on the outer wall of the inner core (2), and the groove is arranged on the inner wall of the sleeve (1), and the protrusion and the groove are engaged with each other.

7. The one-step arthroscopic approach builder according to claim 1, characterized in that: When the inner core (2) is retracted from the access end into the sleeve (1), the blade (3) rotates to form a 90-degree angle with the sleeve (1).

8. The one-step arthroscopic approach builder according to any one of claims 1 to 7, characterized in that: The rotary component (4) is a torsion spring, and the blade (3) is provided with a rotating shaft rotatably connected to the sleeve (1) and is connected to the torsion spring via the rotating shaft.

9. The one-step arthroscopic approach builder according to claim 8, characterized in that: The rotating shaft is connected to the sleeve (1) via a bearing.

10. The one-step arthroscopic approach builder according to claim 8, characterized in that: The entry end of the sleeve (1) is provided with a closed cavity for accommodating a torsion spring.

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