A surgical sleeve and a reference frame with the surgical sleeve

Abstract

The present invention discloses a surgical sleeve and a reference frame with the surgical sleeve, which mainly comprises: a handle, comprising a connecting end, a limiting part and a holding end which are fixedly connected in sequence; a positioning sleeve, one end of which is provided with a positioning end; a connecting piece, comprising an adjusting ring and a connecting ring; an angle exists between the axis of the adjusting ring and the axis of the connecting ring; the adjusting ring comprises a limiting structure and an adjusting structure; both the limiting structure and the adjusting structure are arranged on the side wall of the connecting ring; a notch is arranged on the side wall of the connecting ring; the notch is located between the limiting structure and the adjusting structure; the connecting ring is sleeved on the outside of the positioning sleeve; a through hole adapted to the limiting part is arranged inside the limiting structure; the connecting end is threadedly connected to the adjusting structure; and a calibration frame, which is separated from the positioning sleeve and fixed on the outside of the positioning sleeve.

Description

Technical Field

[0001] The invention belongs to the technical field of medical devices, and in particular relates to a surgical sleeve and a reference frame with the surgical sleeve. Background Art

[0002] PFNA is a new type of proximal femoral internal fixation system and a newly improved PFN (proximal femoral intramedullary nail) system. When PFNA is completed with the help of a navigation system, it faces many technical problems. How to combine the operating instruments corresponding to each surgical step with the frame with NDI balls to ensure effective intraoperative navigation is a technical problem that needs to be solved.

[0003] Especially for the cannula instrument during PFNA, the cannula instrument is tubular, and a handle is set on the outside of the cannula instrument to facilitate the doctor's operation. Therefore, during the preparation for surgery, it is necessary to take into account the patient's physiological characteristics and the position of the supporting surgical instruments. At present, fasteners such as bolts are commonly used to limit the handle to the outside of the cannula instrument, and special tools are needed to adjust the state of the fasteners to release the positional relationship between the handle and the cannula instrument, and then adjust the handle posture, and finally use special tools to adjust the state of the fasteners to limit the positional relationship between the handle and the cannula instrument again. The entire adjustment process is relatively cumbersome and takes a long time; and special tools unrelated to the operation are required, which increases the chance of infection.

[0004] In view of the above problems, the present invention provides a surgical sleeve and a reference frame with the surgical sleeve. Summary of the invention

[0005] In order to overcome the problems raised in the background technology, the present invention adopts the following technical solutions:

[0006] A surgical sleeve and a reference frame with the surgical sleeve, comprising:

[0007] A connecting member, comprising a connecting ring, wherein the connecting ring has a notch; and

[0008] An adjusting ring is connected to the connecting ring, and an angle is formed between the axis of the adjusting ring and the axis of the connecting ring, wherein the adjusting ring comprises a limiting structure and an adjusting structure; the limiting structure and the adjusting structure are both arranged on the side wall of the connecting ring, and the notch is located between the limiting structure and the adjusting structure; a through hole is arranged inside the limiting structure;

[0009] A handle having a connecting end; the connecting end passes through the through hole and is threadedly connected to the adjusting structure; wherein the handle is constructed to drive the adjusting structure to move toward the position of the limiting structure when rotating and reduce the width of the notch; and to drive the adjusting structure away from the limiting structure when rotating in the opposite direction.

[0010] Furthermore, it also includes: a positioning sleeve, the positioning sleeve is in a sleeve-connected relationship with the connecting ring, and the positioning sleeve is at least partially located in the connecting ring.

[0011] Furthermore, the interior of the positioning sleeve is detachably connected with an inner tube; at least two types of the inner tubes are provided, and different inner tubes have the same outer diameter and different inner diameters.

[0012] Furthermore, the angle between the axis of the adjustment ring and the axis of the connecting ring is 45°-135°.

[0013] Furthermore, the connecting end, the limiting portion and the holding end have the same axis.

[0014] Furthermore, the calibration frame also includes a first adjustment component; the first adjustment component is arranged between the connecting component and the calibration structure to adjust the angle between the connecting component and the calibration structure.

[0015] Furthermore, the positioning end portion comprises a double-pointed structure; the double-pointed structure comprises two spikes arranged in a circumferential array along the axis of the positioning sleeve.

[0016] Furthermore, the positioning end also includes a buffer plane; the spikes are arranged on the buffer plane.

[0017] Furthermore, the positioning end also includes an indicating slope; there is an angle between different indicating slopes; and the extended intersection area of ​​the indicating slope coincides with the spike.

[0018] A reference frame with a surgical sleeve, comprising:

[0019] The above-mentioned surgical sleeve;

[0020] The calibration frame is separated from the positioning sleeve and fixed on the outside of the positioning sleeve.

[0021] Furthermore, the calibration frame includes a connecting component and a calibration structure; the connecting component is fixedly connected to the calibration plate; and the connecting component is detachably connected to the positioning sleeve.

[0022] Beneficial effects of the present invention:

[0023] 1. The connector is threadedly connected to the handle. Turning the handle can release the positional relationship between the handle and the cannula instrument. After adjusting the handle posture to a suitable state, turn the handle in the opposite direction to limit the positional relationship between the handle and the cannula instrument. It is convenient, fast and saves time, and there is no need to use special tools unrelated to the operation, reducing the risk of infection.

[0024] 2. There are two spikes at the far end of the positioning sleeve. When the positioning sleeve deviates from the predetermined position, you can hold the handle and drive the positioning sleeve to rotate with one spike as the center of the circle, so as to adjust the position of the other spike. Repeating this process can achieve fine adjustment of the far end position of the positioning sleeve, so that the positioning sleeve can quickly reach the predetermined position;

[0025] 3. A buffer plane is provided at the rear end of the spike, which is perpendicular to the axial direction of the positioning sleeve to prevent the spike from being inserted too much into the bone tissue and causing unnecessary damage; at the same time, the buffer plane limits the length of the spike inserted into the bone tissue, so as to determine the distance between the calibration frame and the surface of the bone tissue, which is convenient for controlling the depth of the nail placement;

[0026] 4. An indicating bevel is provided at the distal end of the positioning sleeve. There is an angle between the two indicating bevels, and the extended intersection area of ​​the two indicating bevels coincides with the spikes. During the operation, it is convenient for the doctor to observe the position of the spikes and to fine-tune the distal position of the positioning sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A schematic diagram of the structure of a sleeve reference frame for implementing the present invention;

[0028] Figure 2 A side view of a sleeve reference frame implementing the present invention;

[0029] Figure 3 A side view of a sleeve reference frame implementing the present invention when it is adjusted to another posture;

[0030] Figure 4 A schematic diagram of the structure of a sleeve reference frame when the sleeve reference frame of the present invention is adjusted to another posture;

[0031] Figure 5 A schematic diagram of the structure of a sleeve reference frame for adjusting the surgical position according to the present invention;

[0032] Figure 6 It is a structural schematic diagram of a positioning sleeve implementing the present invention;

[0033] Figure 7 A schematic diagram of the structure of a positioning end portion for implementing the present invention;

[0034] Figure 8 It is a schematic diagram of assembling a connecting piece for implementing the present invention;

[0035] Fig. 9 It is a structural schematic diagram of a connecting piece implementing the present invention;

[0036] Fig.10 It is a structural schematic diagram of a handle implementing the present invention;

[0037] Fig.11A schematic diagram of the structure of a calibration frame for implementing the present invention;

[0038] Fig.12 A side view of a calibration frame for implementing the present invention;

[0039] Fig.13 A schematic diagram of the structure of another sleeve reference frame for implementing the present invention;

[0040] Fig.14 A side view of another sleeve reference frame for implementing the present invention;

[0041] In the figure, 1. handle; 2. connecting piece; 3. calibration frame; 4. positioning sleeve; 5. inner tube; 11. connecting end; 12. limiting part; 13. holding end; 21. adjusting ring; 22. connecting ring; 31. connecting assembly; 32. first adjusting assembly; 33. second adjusting assembly; 34. calibration structure; 35. calibration unit; 41. sleeve body; 42. enlarged end; 43. positioning end; 311. first connecting structure; 312. second connecting structure; 313. third connecting structure; 431. spike; 432. buffer plane; 433. indicating slope. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present invention are described clearly and completely below through specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation methods. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in 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.

[0043] Example 1

[0044] like Figure 1 —5 and Figure 8 A surgical sleeve as shown in -10, comprising:

[0045] A connecting member 2, comprising a connecting ring 22, wherein the connecting ring 22 has a notch; and

[0046] The adjusting ring 21 is connected to the connecting ring 22, and there is an angle between the axis of the adjusting ring 21 and the axis of the connecting ring 22, wherein the adjusting ring 21 includes a limiting structure and an adjusting structure; the limiting structure and the adjusting structure are both arranged on the side wall of the connecting ring 22, and the notch is located between the limiting structure and the adjusting structure; a through hole is arranged inside the limiting structure;

[0047] The handle 1 has a connecting end 11; the connecting end passes through the through hole and is threadedly connected to the adjusting structure; wherein the handle 1 is constructed to drive the adjusting structure to move toward the position of the limiting structure when rotating, and reduce the width of the gap; and to drive the adjusting structure away from the limiting structure when rotating in the opposite direction.

[0048] More specifically, the handle 1 also includes a limiting portion 12 and a holding end 13 which are fixedly connected to the connecting end 11 in sequence; the positional relationship between the handle 1 and the cannula device can be released by rotating the handle 1; after adjusting the handle 1 to a suitable state, the handle 1 is rotated in the opposite direction to limit the positional relationship between the handle 1 and the cannula device; it is convenient, fast and saves time, and does not require the use of special tools unrelated to the operation, thereby reducing the risk of infection. Figure 1-4 The figure shows a schematic diagram of the handle 1 in different postures.

[0049] Preferably, the holding end 13 has a first end and a second end, wherein the diameter of the first end increases step by step toward the second end, and similarly, the diameter of the second end also increases step by step toward the first end, so that the outer wall of the holding portion forms two recessed portions that are mirror-symmetrical to each other and a raised portion located between the two recessed portions, wherein there is a smooth transition between the two recessed portions and the raised portion; under this setting, the outer wall of the handle 1 is more in line with the curve of the human palm, making it easier for medical personnel to hold the handle 1 during use, so as to better apply force to the handle 1.

[0050] In addition, the holding end portion 13 is hollowed out. Specifically, the inside of the holding end portion 13 is hollow, and a plurality of holes are opened on its outer wall toward the inner wall. Under this arrangement, the weight of the handle 1 is reduced. During use, after the sheath instrument is combined, the weight of the combined instrument can be reduced. Furthermore, the hollow arrangement of the holding end portion 13 makes the outer wall of the holding end portion 13 present an uneven concave shape. After the doctor grasps it, the friction between the holding end portion 13 and the user's palm can be enhanced, thereby making it easier to rotate the handle 1 as a whole.

[0051] refer to Figure 1 —5 and Fig. 9 —10, the principle of the connection member 2 limiting the positional relationship between the handle 1 and the positioning sleeve 4 is explained:

[0052] After the handle 1 is inserted into the adjusting ring 21, the handle 1 is rotated, and the limiting part is stuck on the limiting structure. The screw thread on the handle 1 is rotated to drive the adjusting structure to move in the direction of the limiting structure, thereby reducing the distance between the limiting structure and the adjusting structure, and reducing the width of the notch on the side wall of the connecting ring 22, so that the connecting ring 22 is elastically deformed, and the connecting ring 22 is fixed to the outside of the positioning sleeve 4. At the same time, the handle 1 and the connecting member 2 are connected by threads, thereby locking the positional relationship between the handle 1 and the positioning sleeve.

[0053] At this time, the connecting ring 22 is compressed, and the connecting ring 22 itself will generate an elastic force to restore its original shape. This elastic force will act on the limiting structure and the adjusting structure respectively, driving the distance between the limiting structure and the adjusting structure to increase. At this time, the limiting part is stuck on the limiting structure, and the adjusting structure is threadedly connected to the connecting end 11. After the elastic force is transmitted to the limiting structure and the adjusting structure, it becomes a thrust along the axial direction of the limiting structure and the adjusting structure, but the force to release the connection relationship between the adjusting structure and the connecting end 11 is a rotational force. In the current situation, the thrust along the straight line direction cannot be converted into a rotational force. Therefore, the connecting ring 22 itself will generate an elastic force to restore its original shape and cannot release its own lock, and a self-locking is formed between the handle 1, the connector 2, and the positioning sleeve 4.

[0054] In some embodiments of the present application, Figure 5 and Figure 8 As shown in FIG. 9 , the positioning sleeve 4 is also included: the positioning sleeve 4 is in a sleeve-connected relationship with the connecting ring 22, and the positioning sleeve 4 is at least partially located in the connecting ring 22; the inner tube 5 is detachably connected to the interior of the positioning sleeve 4; the inner tube 5 is provided with a variety of specifications, and different inner tubes 5 have the same outer diameter and different inner diameters. The purpose of this design is to make the same positioning sleeve 4 adapt to more types of implants such as intramedullary nails and screws. After the positioning sleeve 4 is placed in a suitable position, different types of implants can be sent into the patient's body through the positioning sleeve 4 by simply replacing different inner tubes 5.

[0055] The angle between the axis of the adjusting ring 21 and the axis of the connecting ring 22 is 45°-135°, so as to ensure that the wrist is substantially parallel to the sleeve direction during the operation, so that the doctor can fine-tune the position of the sleeve more flexibly.

[0056] In the specific example of this application, Figure 8 , Fig.10 As shown, the axis of the connecting end 11, the limiting part and the holding end 13 are the same. When the handle 1 is rotated, the posture of the handle 1 does not change. The position relationship of the locking handle 1, the connecting member 2 and the positioning sleeve 4 is front and back, and the axis of the handle 1 remains stationary.

[0057] If there is an angle between the axis of the connecting end 11 and the axis of the holding end 13, when the handle 1 is rotated to tighten the distance between the limiting structure and the adjustment structure, the holding end 13 will rotate with the axis of the connecting end 11 as the axis. In most cases, when the connecting end 11 is tightened, the holding end 13 will be out of the original position, so that the posture of the handle 1 is not the posture before locking. Although this design can achieve the purpose of adjusting the positional relationship between the handle 1 and the positioning sleeve, the posture of the handle 1 changes before and after locking, which increases the difficulty of adjusting the handle 1.

[0058] In some examples of this application, such as Figure 4 As shown in FIG. 7 , the positioning sleeve 4 also includes a sleeve body 41 and a flared end 42. One end of the sleeve body 41 is fixedly connected to the flared end 42, and the other end is fixedly connected to the positioning end 43. The connecting member 2 and the calibration frame 3 are both fixed to the outside of the sleeve body 41. The interior of the positioning sleeve 4 is provided with uniform through holes.

[0059] In some examples of this application, such as Figure 5 As shown in FIG. 7 , the positioning sleeve 4 has a positioning end 43; the positioning end 43 includes a double-pointed structure; the double-pointed structure includes two spikes 431 arranged in a circumferential array along the axis of the positioning sleeve 4. When the positioning sleeve 4 deviates from the predetermined position, the handle 1 can be held and the positioning sleeve 4 can be rotated with one spike 431 as the center of the circle to adjust the position of the other spike 431. This can be repeated to achieve fine adjustment of the distal end position of the positioning sleeve 4, so that the positioning sleeve 4 can quickly reach the predetermined position. In this setting, the two spikes 431 abut against the patient's bone surface, so that the friction between the instrument and the patient's bone surface is enhanced, and it also has an anti-slip function.

[0060] Preferably, the positioning end 43 further includes a buffer plane 432; the spike 431 is arranged on the buffer plane 432. The rear end of the spike 431 is provided with a buffer plane 432, and the buffer plane 432 is perpendicular to the axial direction of the positioning sleeve 4 to prevent the spike 431 from being excessively inserted into the bone tissue and causing unnecessary damage; at the same time, the buffer plane 432 limits the length of the spike 431 inserted into the bone tissue, so as to determine the distance between the calibration frame 3 and the surface of the bone tissue, and facilitate the control of the nail placement depth.

[0061] Preferably, the spikes 431 are disposed longitudinally or transversely on the buffer plane 432 .

[0062] Furthermore, the positioning end 43 also includes an indicating slope 433; there are angles between different indicating slopes 433; and the extended intersection area of ​​the indicating slope 433 overlaps with the spike 431. During the operation, the doctor can observe the position of the spike 431 and fine-tune the distal position of the positioning sleeve 4.

[0063] In addition, the positioning sleeve 4 is provided with different specifications, and each specification of the positioning sleeve is set to a different length. For example, the length of the positioning sleeve 4 can be 5~20cm. More specifically, the positioning sleeve has length specifications of 5cm, 10cm, 15cm and 20cm. When in use, according to the surgical site and surgical requirements, a positioning sleeve 4 of appropriate length is used to cope with surgeries in different positions. For example, in fractures of the upper limbs such as the forearm, a shorter positioning sleeve can be used.

[0064] Specifically, the length of the inner tube 5 is always greater than the length of the positioning sleeve 4. Specifically, both ends of the inner tube 5 extend out of the positioning sleeve 4, wherein one end of the inner tube 5 corresponding to the positioning end 43 is flush with the spike 431 or away from the spike 431, so that during the insertion into the patient's body, the two spikes 431 can be prevented from getting caught on the patient's muscles and fascia tissues.

[0065] The method of using this embodiment is as follows:

[0066] 1. Fix the connecting assembly 31 on the positioning sleeve 4.

[0067] 2. Use the first adjustment component 32 and the second adjustment component 33 to adjust the positional relationship between the connection component 31 and the calibration structure 34 .

[0068] 3. Sleeve the connecting ring 22 onto the outside of the positioning sleeve 4, and pass the connecting end 11 of the handle 1 through the limiting structure and then connect it with the adjusting structure through threads.

[0069] 4. Adjust the handle 1 to a suitable posture, and then rotate the handle 1 to lock the positional relationship between the handle 1 and the positioning sleeve 4.

[0070] 5. Place the positioning sleeve 4 into the patient's body and use the double-pointed structure to fine-tune the position of the positioning sleeve 4.

[0071] 6. Insert a suitable inner tube 5, and insert the implant into the patient's body through the hole of the inner tube 5. During the operation, replace the inner tube 5 of different types according to the size of the implant.

[0072] Example 2

[0073] like Fig.11 —A reference frame with a surgical sleeve as shown in FIG14, comprising:

[0074] The surgical sleeve as in Example 1;

[0075] The calibration frame 3 is separated from the positioning sleeve 4 and fixed on the outside of the positioning sleeve 4. During the operation, the axis of the positioning sleeve 4 and the position of the positioning sleeve 4 can be calculated through the position of the calibration frame 3.

[0076] like Fig.11 As shown in FIG. 14 , the calibration frame 3 includes a connecting component 31 and a calibration plate; the connecting component 31 is fixedly connected to the calibration plate. During the operation, the position of the positioning sleeve 4 can be determined by the calibration frame 3. The connecting component 31 and the positioning sleeve 4 are detachably connected, and the angle between the connecting component 31 and the positioning sleeve 4 can be selectively adjusted to adapt to the patient's physiological condition and facilitate the smooth operation.

[0077] Specifically, at least three calibration units 35 are provided on the calibration board, so that a reference coordinate system can be established based on multiple calibration units 35 to determine the position of the positioning sleeve 4 in the reference coordinate system, so that the position of the positioning sleeve 4 can be determined during surgery.

[0078] In some examples of this application, such as Fig.11 As shown in FIG. 13 , the connection assembly 31 includes a first connection structure 311, a second connection structure 312 and a third connection structure 313. One end of the second connection structure 312 is fixedly connected to the first connection structure 311 through the third connection structure 313, and the other end is connected to the calibration plate.

[0079] The first connection structure 311 and the second connection structure 312 are respectively located on two sides of the positioning sleeve 4 . The third connection structure 313 can be used to firmly clamp the first connection structure 311 and the second connection structure 312 on the outer wall of the positioning sleeve 4 .

[0080] Specifically, the third connection structure 313 is a bolt.

[0081] Furthermore, the calibration frame 3 also includes a first adjustment component 32; the first adjustment component 32 is arranged between the connecting component 31 and the calibration plate to adjust the angle between the connecting component 31 and the calibration plate.

[0082] Specifically, the first adjustment assembly 32 includes a first connecting rod, a first sleeve, and a first locking member; one end of the first connecting rod is fixedly connected to the second connecting structure 312, and the other end is rotatably connected to the first sleeve. The outer wall of the first sleeve is connected to the calibration frame 3. The first locking member is threadedly connected to the first connecting rod after passing through the first sleeve, and the positional relationship between the first connecting rod and the first sleeve is limited by tightening the first locking member.

[0083] In the specific example of this application, Fig.12 As shown in FIG. 13, the calibration frame 3 also includes a second adjustment component 33. The second adjustment component 33 includes a second connecting rod, a second sleeve, and a second locking member. One end of the second connecting rod is fixedly connected to the first sleeve, and the other end is rotatably connected to the second sleeve. The outer wall of the second sleeve is fixedly connected to the calibration frame 3. The second locking member is threadedly connected to the second connecting rod after passing through the second sleeve. Tightening the second locking member limits the positional relationship between the second connecting rod and the second sleeve.

[0084] Furthermore, the axis of the second connecting rod is perpendicular to the axis of the first sleeve, so that the first adjustment component 32 and the second adjustment component 33 can adjust the angle between the connecting component 31 and the calibration plate in two dimensions respectively.

[0085] The above embodiments are only used to understand the present invention. It should be noted that, for those skilled in the art, several improvements can be made to the present invention without departing from the principles of the present invention, and these improvements will also fall within the scope of protection of the claims of the present invention.

Claims

1. A surgical sleeve, characterized in that: It includes: A connecting piece, the connecting piece comprising a connecting ring, the connecting ring having a notch; and An adjusting ring is connected to the connecting ring, and an angle is formed between the axis of the adjusting ring and the axis of the connecting ring, wherein the adjusting ring comprises a limiting structure and an adjusting structure; the limiting structure and the adjusting structure are both arranged on the side wall of the connecting ring, and the notch is located between the limiting structure and the adjusting structure; a through hole is arranged inside the limiting structure; A handle having a connecting end portion; the connecting end portion passes through the through hole and is threadedly connected to the adjusting structure; wherein the handle is configured to drive the adjusting structure to move toward the position where the limiting structure is located and reduce the width of the notch when rotating; and to drive the adjusting structure away from the limiting structure when rotating in the opposite direction; It also includes: a positioning sleeve, which is in a sleeve-connected relationship with the connecting ring, and the positioning sleeve is at least partially located in the connecting ring; wherein the interior of the positioning sleeve is detachably connected to an inner tube; at least two types of the inner tubes are provided, and different inner tubes have the same outer diameter and different inner diameters.

2. A surgical sleeve according to claim 1, characterized in that: The angle between the axis of the adjusting ring and the axis of the connecting ring is 45°-135°.

3. A surgical sleeve according to claim 1, characterized in that: The connecting end, the limiting portion and the holding end have the same axis.

4. A surgical sleeve according to claim 1, characterized in that: The positioning sleeve has a positioning end, wherein the positioning end comprises a double-pointed structure; the double-pointed structure comprises two spikes arranged in a circumferential array along the axis of the positioning sleeve.

5. A surgical sleeve according to claim 4, characterized in that: The positioning end also includes a buffer plane; the spike is arranged on the buffer plane.

6. A surgical sleeve according to claim 5, characterized in that: The positioning end also includes an indicating slope; there are angles between different indicating slopes; and the extended intersection area of ​​the indicating slope coincides with the spike.

7. A reference frame with a surgical sleeve, characterized in that: include: The surgical sleeve according to any one of claims 1 to 6; The calibration frame is separated from the positioning sleeve and fixed on the outside of the positioning sleeve.

8. A reference frame with a surgical sleeve according to claim 7, characterized in that: The calibration frame comprises a connecting assembly and a calibration plate; the connecting assembly is fixedly connected to the calibration plate; and the connecting assembly is detachably connected to the positioning sleeve.

9. A reference frame with a surgical sleeve according to claim 7, characterized in that: The calibration frame also includes a first adjustment component; the first adjustment component is arranged between the connecting component and the calibration structure to adjust the angle between the connecting component and the calibration structure.

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