Straight rod type wire threading guide

Abstract

This invention includes a hollow conduit, a slider, a slide rod, and a pulling assembly. The hollow conduit has a front end, a receiving space, and a straight tube slide member. The slider has a slider slide member and a through hole; the slider slide member is used to slide relative to the straight tube slide member. The slide rod passes through the through hole and moves relative to the slider. The slide rod also has a slide rod connecting portion; the pulling assembly has a cable portion and a stop head; the cable portion passes through the front end and extends out of the hollow conduit, and the stop head stops the pulling assembly at the front end, the stop head having a connecting member. The slide rod connecting portion and the connecting member can be engaged or disengaged. This invention has the advantages of lower insertion difficulty and reduced damage to tissues.

Description

Technical Field

[0001] This invention relates to a straight-bar type wire threading guide, and more particularly to a straight-bar type wire threading guide that combines the advantages of easier insertion and reduced damage to tissues. Prior Technology

[0002] Referring to Figures 10 and 11, the structure of a traditional orthopedic suture device, such as the "Two Members Cerclage Tool" in US Patent No. 8277451, mainly includes (as per the part numbers and component names in this specification):

[0003] A first handheld element 70 has a first handle 71, a first semi-curved guide tube 72 and a protruding rotating shaft 73; the first semi-curved guide tube 72 is fixed to the first handle 71.

[0004] A second hand-held element 80 has a second handle 81, a second semi-curved guide tube 82 and a rotating shaft receiving recess 83; the second semi-curved guide tube 82 is fixed to the second handle 82.

[0005] When the protruding pivot portion 73 of the first handheld element 70 is engaged with the pivot receiving recess 83 of the second handheld element 80, the first semi-bent conduit 72 can be connected with the second semi-bent conduit 82, allowing a cord-like element M to pass through.

[0006] In operation, the first handheld element 70 is first placed into a fracture site 91, and the first semi-curved conduit 72 must be placed on one side of a bone 92. Then, the second handheld element 80 is placed into the other side of the fracture site 91, and the second semi-curved conduit 82 must be placed on the other side of the bone 92. The protruding pivot portion 73 of the first handheld element 70 is then inserted into the pivot receiving recess 83 of the second handheld element 80. After insertion, the first handle portion 71 and the second handle portion 81 are clamped together, so that the first semi-curved conduit 72 and the second semi-curved conduit 82 are connected, allowing the cord-like element M to pass through.

[0007] Next, the second handheld element 80 (not shown in the figure) is withdrawn first, and then the first handheld element 70 (not shown in the figure) is withdrawn last, leaving only the cord-like element M, thus completing the threading action of the cord-like element M passing around the bone 92.

[0008] However, the above-mentioned traditional methods still have the following drawbacks:

[0009] [1] The placement procedure is quite difficult. If a traditional device is used, the two handheld components must first be inserted into both sides of the bone, and then the protruding rotating shaft and the rotating shaft receiving recess must be aligned and inserted (this is very difficult). After the rotating shaft is inserted, it must be clamped again to align the first half-curved catheter and the second half-curved catheter. This operation requires high skill and experience. If the alignment is not accurate, the suture will fail. The alignment must be repeated and the suture must be inserted again. The placement procedure is quite difficult and requires a lot of pre-use training and practical experience (proficiency). It may also increase the length of the operation. Therefore, the placement procedure is quite difficult.

[0010] [2] The area of ​​damage to the tissues on both sides of the bone is relatively large. Since both handheld components need to penetrate deep into both sides of the bone, they will inevitably damage the tissues on both sides of the bone. Therefore, the area of ​​damage to the tissues on both sides of the bone is relatively large.

[0011] In view of this, it is necessary to develop a technology that can solve the above-mentioned shortcomings of conventional methods. Summary of the Invention

[0012] The purpose of this invention is to provide a straight-bar type wire guide that combines the advantages of easier insertion and reduced tissue damage. In particular, this invention aims to solve the problems of traditional devices, such as higher insertion difficulty and greater damage to tissues on both sides of the bone.

[0013] The technical solution to the above problem is to provide a straight rod type wire threading guide, which includes:

[0014] A hollow conduit has a front end, a front curved portion, a straight portion, a rear end, and a guide channel; the front end, the front curved portion, the straight portion, and the rear end are sequentially connected as a single unit; the front curved portion forms an accommodating space; the straight portion has a straight sliding member; and the guide channel connects the front end and the rear end.

[0015] A slider is disposed on the hollow conduit. The slider has a slider sliding member and a through hole. The slider sliding member and the straight tube sliding member can be in a disengaged state and an engaged state. When in the disengaged state, the slider and the hollow conduit are separated. When in the engaged state, the slider sliding member and the straight tube sliding member allow the slider and the hollow conduit to slide relative to each other.

[0016] A sliding rod is provided on the slider. The sliding rod has a sliding rod connecting part, a sliding rod part, and a rotating force-applying part. The sliding rod connecting part is provided at one end of the sliding rod part. The sliding rod part is used to pass through the through hole and can rotate and slide relative to the sliding rod part. The rotating force-applying part is provided at the other end of the sliding rod part.

[0017] A pulling component is provided on the hollow guide tube. The pulling component has a cable portion and a stop head connected as one piece. The cable portion allows the pulling component to extend successively into the front end and the guide channel, and to extend out of the rear end. The stop head is used to stop the pulling component at the front end, and the stop head has a connector.

[0018] The slide bar system may have an engaging position and a disengaged position. When in the engaging position, the slide bar connecting part is engaged with the connecting member; when in the disengaged position, the slide bar connecting part is disengaged from the connecting member.

[0019] The above-mentioned objects and advantages of the present invention can be readily understood from the following detailed description and accompanying drawings of the selected embodiments.

[0020] The present invention will now be described in detail with reference to the following embodiments and accompanying drawings: Simple Explanation of the Diagram

[0021] Figure 1A is a schematic diagram of the two sliding parts of the present invention in a disengaged state.

[0022] Figure 1B is a partially enlarged sectional view of Figure 1A.

[0023] Figure 2A is a schematic diagram of the two sliding parts of the present invention in a coupled state.

[0024] Figure 2B is a partially enlarged sectional view of Figure 2A.

[0025] Figure 3 is a schematic diagram of one of the threading guidance processes of the present invention.

[0026] Figure 4 is a schematic diagram of the second part of the threading guidance process of the present invention.

[0027] Figure 5 is a schematic diagram of the third step of the threading guidance process of the present invention.

[0028] Figure 6A is a schematic diagram of the fourth step of the threading guidance process of the present invention.

[0029] Figure 6B is a partially enlarged sectional view of Figure 6A.

[0030] Figure 7 is a schematic diagram of the fifth step of the threading guidance process of the present invention.

[0031] Figure 8 is a schematic diagram of the sixth step of the threading guidance process of the present invention.

[0032] Figure 9 is a schematic diagram of the seventh step of the threading guidance process of the present invention.

[0033] Figure 10 is a schematic diagram of one of the threading and guiding processes of a traditional device.

[0034] Figure 11 is a schematic diagram of the second step in the threading and guiding process of a traditional device. Implementation

[0035] Refer to Figures 1A, 1B, 2A, 2B, 3, 4, 5, 6A, 6B, 7, 8, and 9. This invention is a straight-bar type wire threading guide, comprising:

[0036] A hollow conduit 10 has a front end portion 11, a front curved portion 12, a straight portion 13, a rear end portion 14, and a guide channel 15. The front end portion 11, the front curved portion 12, the straight portion 13, and the rear end portion 14 are sequentially connected as a single unit. The front curved portion 12 forms a receiving space 121. The straight portion 13 has a straight tube sliding member 131. The guide channel 15 connects the front end portion 11 and the rear end portion 14.

[0037] A slider 20 is disposed on the hollow conduit 10. The slider 20 has a slider sliding member 21 and a through hole 22. The slider sliding member 21 and the straight tube sliding member 131 can be in a disengaged state (refer to Figure 1A) and an engaged state (refer to Figure 2A). In the disengaged state, the slider 20 and the hollow conduit 10 are separated. In the engaged state, the slider sliding member 21 and the straight tube sliding member 131 allow the slider 20 and the hollow conduit 10 to slide relative to each other (refer to Figures 6A and 7).

[0038] A sliding rod 30 is provided on the slider 20. The sliding rod 30 has a sliding rod connecting part 31, a sliding rod part 32, and a rotating force-applying part 33. The sliding rod connecting part 31 is provided at one end of the sliding rod part 32. The sliding rod part 32 is used to pass through the through hole 22 and can rotate and slide relative to each other. The rotating force-applying part 33 is provided at the other end of the sliding rod part 32.

[0039] A pulling component 40 is disposed on the hollow conduit 10. The pulling component 40 has a cable portion 41 and a stop head 42 connected as one piece. The cable portion 41 allows the pulling component 40 to extend successively into the front end portion 11 and the guide channel 15, and to extend out of the rear end portion 14. The stop head 42 is used to stop the pulling component 40 at the front end portion 11, and the stop head 42 has a connector 421.

[0040] The slide bar 30 may have an engaging position P1 (refer to Figures 6A and 6B) and a disengaged position P2 (refer to Figure 8). When in the engaging position P1, the slide bar connecting part 31 is engaged with the connecting member 421; when in the disengaged position P2, the slide bar connecting part 31 is disengaged from the connecting member 421.

[0041] In practice, the straight tube sliding component 131 can be a dovetail protrusion.

[0042] The slider 21 corresponds to the straight tube slider 131 and can be a dovetail recess.

[0043] This allows the straight tube slider 131 and the slider slider 21 (refer to Figure 2A) to slide relative to each other in the X-axis direction and to be connected relative to each other in the Z-axis direction.

[0044] The sliding rod connection part 31 can be a screw.

[0045] The connector 421 corresponds to the slide rod connection part 31 and can be a screw hole.

[0046] When the straight tube slider 131 is connected to the slider slider 21, the through hole 22 and the connector 421 can be coaxial. In this way, the slider 30 can be accurately guided to move coaxially in the direction of the connector 421 and can be accurately screwed and fixed to the connector 421.

[0047] For the operational principles and practical application process of this case, please refer to the following explanation:

[0048] Referring to Figure 3, the first step is to "prepare to insert the cable", aligning the tail end of the cable part 41 with the front end 11 of the hollow guide tube 10, in preparation for insertion.

[0049] Referring to Figure 4, the second step is "insertion of the cable is completed". After the tail end of the cable part 41 is aligned with the front end 11 of the hollow guide tube 10, it is continuously inserted until the stop head 42 abuts against the front end 11.

[0050] Referring to Figure 5, the third step is "insertion completed". First, the hollow catheter 10 is inserted into the fracture site 91 of one of the patients (e.g., a place in the lower limb), and then it is passed under a bone 92 so that the bone 92 is approximately inside the receiving space 121.

[0051] Referring to Figures 6A and 6B, the fourth step is "moving the slider and rod forward to the bottom and then rotating and fixing them." Since the fracture site 91 is located inside the patient's limb, the incision is extremely small during minimally invasive surgery, making it almost invisible to the naked eye. Therefore, it requires the assistance of guided hand techniques. This design addresses this by moving the slider 20 and rod 30 forward to the bottom. The connecting part 31 of the rod 30 will be accurately guided to contact the connecting member 421 of the stop head 42. Assuming that in this design, the connecting part 31 is a screw, and the connecting member 421 is a corresponding screw hole, the rod 30 can be rotated using the rotating force application part 33, and the connecting part 31 can be screwed and fixed to the connecting member 421, thus securely connecting and fixing the pulling component 40 to the rod 30.

[0052] Referring to Figure 7, the fifth step is "moving the slider and the slide bar backward". At this time, the slider 20 and the slide bar 30 are moved backward, and the slide bar connecting part 31 pulls the stop head 42 to move outward. At the same time, the cable part 41 (which can also be called the stop head 42) is pulled out of the fracture site 91.

[0053] Referring to Figure 8, the sixth step is "separation of the slide rod from the stop head and separation of the slider (slide rod) from the hollow conduit". First, the slide rod connecting part 31 is separated from the connector 421. Then, the stop head 42 can be temporarily fixed with a clamping tool 93. Then, the slider 20 (and the slide rod 30) can be moved further back and finally separated from the hollow conduit 10.

[0054] Referring to Figure 9, the seventh step is to "remove the hollow conduit". The hollow conduit 10 is removed. At this time, the cable part 41 has passed under the bone 92 and moved to the top before coming out again, thus completing the purpose of inserting the cable part 41.

[0055] The advantages and benefits of this case can be summarized as follows:

[0056] [1] The insertion operation is relatively simple. The design of this invention guides the slide bar forward to the end, so that it can accurately contact the stop head (more specifically, the connector). This forward pushing design is very simple and requires little operating skill. Then, it can be fixed by rotation. This rotation fixation only requires a few rotations to achieve a stable lock, which is also very simple. Then, the slide bar and the slider are moved back. There are different operation examples for this operation. The purpose is to achieve stable sliding in the aforementioned action and rapid disassembly thereafter, so that the cable part can be pulled out. Compared with traditional devices, the insertion operation of this invention is relatively simple.

[0057] [2] It can reduce damage to tissues. Since this case only requires the insertion of the hollow catheter on one side of the bone, and the other side is the space for the slide bar to move in, the range is relatively small. Therefore, overall, the damage to the internal tissues can be reduced. Thus, it can reduce damage to tissues.

[0058] The above description is merely a detailed explanation of the present invention through preferred embodiments. Any simple modifications and variations made to these embodiments do not depart from the spirit and scope of the present invention.

[0059] 10: Hollow tubing

[0060] 11: Front end

[0061] 12: Forward bend

[0062] 121: Accommodation space

[0063] 13: Directly Managed Department

[0064] 131: Straight tube sliding component

[0065] 14: Rear end

[0066] 15: Guiding Channel

[0067] 20: Slider

[0068] 21: Slider slider

[0069] 22: Through hole

[0070] 30: Slide bar

[0071] 31: Slide rod connection part

[0072] 32: Slide rod section

[0073] 33: Rotating force application part

[0074] 40: Pull component

[0075] 41: Attachment Department

[0076] 42: Stop the head

[0077] 421: Connector

[0078] 70: First handheld component

[0079] 71: First handle

[0080] 72: First half-curve conduit

[0081] 73: Protruding pivot section

[0082] 80: Second handheld component

[0083] 81: Second handle

[0084] 82: Second half-curve conduit

[0085] 83: Shaft receiving recess

[0086] 91: Fracture site

[0087] 92: Bones

[0088] 93: Clamping tools

[0089] M: Cord-like element

[0090] P1: Combination position

[0091] P2: Separation position

Claims

1. A straight rod type wire threading guide, comprising: A hollow conduit has a front end, a front curved portion, a straight portion, a rear end, and a guide channel; the front end, the front curved portion, the straight portion, and the rear end are sequentially connected as a single unit; the front curved portion forms a receiving space; the straight portion has a straight tube slider, and the guide channel connects the front end and the rear end; a slider is disposed on the hollow conduit, and the slider has a slider slide member and a through hole; the slider slide member and the straight tube slide member can have a disengaged state and an engaged state. When in the disengaged state, the slider and the hollow conduit are separated; when in the engaged state, the slider slide member and the straight tube slide member allow the slider and the hollow conduit to slide relative to each other. A sliding rod is provided on the slider, the sliding rod having a sliding rod connecting part, a sliding rod part, and a rotating force-applying part; the sliding rod connecting part is provided at one end of the sliding rod part, the sliding rod part is used to pass through the through hole and can rotate and slide relative to each other, the rotating force-applying part is provided at the other end of the sliding rod part; and a pulling component is provided on the hollow guide tube, the pulling component having a cable part and a stop head connected as one piece; the cable part allows the pulling component to extend successively into the front end and the guide channel, and extend out of the rear end; the stop head is used to stop the pulling component at the front end, the stop head having a connector; wherein, the sliding rod can have an engaged position and a disengaged position, when in the engaged position, the sliding rod connecting part and the connector are engaged with each other; when in the disengaged position, the sliding rod connecting part and the connector are disengaged with each other.

2. The straight rod type wire guide as described in claim 1, wherein: The straight tube slider is a dovetail protrusion; and the slider slider is a dovetail recess corresponding to the straight tube slider; thereby, the straight tube slider and the slider slider can slide relative to each other.

3. The straight rod type wire guide as described in claim 1, wherein: The sliding rod connection is a screw; and the connector is a screw hole corresponding to the sliding rod connection.

4. The straight rod type wire guide as described in claim 1, wherein: When the straight tube slider is connected to the slider slider, the through hole and the connector are coaxial, which can accurately guide the slider to move coaxially in the direction of the connector, and can be accurately screwed and fixed to the connector.

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