Fixation screw implantation guider in calcaneal fracture minimally invasive three-dimensional frame

Abstract

The utility model discloses a calcaneal fracture minimally invasive three-dimensional frame internal fixation screw implantation guider which comprises a U-shaped guide frame and a sleeve, the U-shaped guide frame comprises a U-shaped guide frame cross arm, a U-shaped guide frame short arm and a U-shaped guide frame long arm, the U-shaped guide frame short arm and the U-shaped guide frame long arm are arranged in parallel and are both perpendicular to the U-shaped guide frame cross arm, and the sleeve is arranged on the U-shaped guide frame cross arm. A cross arm near-end fixing hole and a cross arm far-end fixing hole which are inclined are formed in a cross arm of the U-shaped guide frame, a short arm fixing hole is formed in a short arm of the U-shaped guide frame in a longitudinal penetrating mode, two sleeve holes are formed in a long arm of the U-shaped guide frame in a transverse penetrating mode, two sleeves are arranged in the sleeve holes in a penetrating mode respectively, and the sleeves are fixedly connected with the long arm of the U-shaped guide frame through screws. By means of the technical scheme, calcaneal fracture reduction of a patient is more sufficient, internal fixation of the three-dimensional frame is reliable, external fixation of gypsum is not needed after operation, functional training can be conducted in the early stage, the patient can walk on the ground in the early stage, and then the beneficial technical effect that the rehabilitation time is greatly shortened is achieved.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a guide for implanting screws in a minimally invasive three-dimensional frame fixation device for calcaneal fractures. Background Technology

[0002] Although the lateral extended "L" shaped incision has long been considered the gold standard for treating intra-articular calcaneal fractures, the incidence of incision edge necrosis, nonunion, and soft tissue infection is as high as 12.5%, and the incidence of osteomyelitis is 1%. In recent years, the minimally invasive treatment of displaced calcaneal fractures using the sinus incision has gradually shown its superiority and has been recognized by more and more orthopedic surgeons. The reported rates of incision necrosis and infection are extremely low, and the operation time does not need to wait for the appearance of skin folds, greatly shortening the hospital stay.

[0003] While plate fixation via the sinus tarsal incision also involves extensive subcutaneous dissection along the lateral wall of the calcaneus, the small incision can lead to incomplete reduction and inaccurate plate placement, which in turn prevents patients from walking on their own quickly and significantly prolongs their recovery time. Utility Model Content

[0004] In view of the above-mentioned technical problems in related technologies, this utility model proposes a minimally invasive three-dimensional frame internal fixation screw implantation guide for calcaneal fractures, which can overcome the above-mentioned shortcomings of the prior art.

[0005] To achieve the above-mentioned technical objectives, the technical solution of this utility model is implemented as follows:

[0006] Minimally invasive three-dimensional frame internal fixation screw implantation guide for calcaneal fractures;

[0007] This minimally invasive three-dimensional frame internal fixation screw implantation guide for calcaneal fractures includes a U-shaped guide frame for determining the position and direction of the guide pin. The U-shaped guide frame is provided with sleeves for determining the entry point of the guide pin and limiting the direction of the guide pin. The U-shaped guide frame includes a U-shaped guide frame cross arm and U-shaped guide frame short arms and U-shaped guide frame long arms disposed on both sides of the U-shaped guide frame cross arm. The U-shaped guide frame short arms and U-shaped guide frame long arms are arranged parallel to each other and are perpendicular to the U-shaped guide frame cross arm. The U-shaped guide frame cross arm is provided with oblique proximal fixation holes and distal fixation holes. The U-shaped guide frame short arms are provided with longitudinally penetrating short arm fixation holes. The U-shaped guide frame long arms are provided with transversely penetrating two sleeve holes. Two sleeves are respectively inserted into the two sleeve holes. The sleeves are fixedly connected to the U-shaped guide frame long arms by screws.

[0008] Furthermore, the two transversely penetrating sleeve holes on the long arm of the U-shaped guide frame are, from top to bottom, the distal sleeve hole and the proximal sleeve hole of the long arm, respectively. The sleeve includes a first sleeve and a second sleeve. The second sleeve is inserted through the distal sleeve hole of the long arm, and the first sleeve is inserted through the proximal sleeve hole of the long arm.

[0009] Furthermore, the first sleeve is fixedly connected to the long arm of the U-shaped guide frame by a fixing screw in the first sleeve hole, and the second sleeve is fixedly connected to the long arm of the U-shaped guide frame by a fixing screw in the second sleeve hole.

[0010] Furthermore, the U-shaped guide frame cross arm, U-shaped guide frame short arm, and U-shaped guide frame long arm are integrally formed.

[0011] Furthermore, both the near-end fixing hole and the far-end fixing hole of the cross arm are located at one-third of the node of the cross arm of the U-shaped guide frame.

[0012] Furthermore, the upper end of the short arm of the U-shaped guide frame is horizontally aligned with the midpoint between the proximal sleeve hole and the distal sleeve hole of the long arm.

[0013] Furthermore, the vertical distance between the upper end of the short arm of the U-shaped guide frame and the first sleeve and the second sleeve is 5mm.

[0014] Furthermore, the diameter of both the first sleeve and the second sleeve is 2.8 mm, and the diameter of the distal sleeve hole and the proximal sleeve hole of the long arm are adapted to the diameter of the first sleeve and the second sleeve.

[0015] Furthermore, the proximal sleeve hole of the long arm, the first sleeve, the distal sleeve hole of the long arm, and the second sleeve are all arranged parallel to the cross arm of the U-shaped guide frame, and the vertical distance between the proximal sleeve hole of the long arm and the distal sleeve hole of the long arm is 10mm.

[0016] The beneficial effects of this utility model are as follows: Through the technical solution of this utility model, the patient's calcaneal fracture is reduced more fully, the three-dimensional frame internal fixation is reliable, and there is no need for external fixation with plaster after surgery. Early functional training can be carried out, and the patient can walk on the ground early, thereby achieving the beneficial technical effect of greatly shortening the rehabilitation time. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a perspective view of the calcaneal fracture minimally invasive three-dimensional frame internal fixation screw implantation guide according to the embodiments of this utility model;

[0019] Figure 2 This is a front view of the calcaneal fracture minimally invasive three-dimensional frame internal fixation screw implantation guide according to an embodiment of the present invention;

[0020] Figure 3 This is a rear view of the calcaneal fracture minimally invasive three-dimensional frame internal fixation screw implantation guide according to an embodiment of the present invention;

[0021] Figure 4 This is a top view of the calcaneal fracture minimally invasive three-dimensional frame internal fixation screw implantation guide according to the embodiment of this utility model;

[0022] Figure 5 This is a bottom view of the minimally invasive three-dimensional frame internal fixation screw implantation guide for calcaneal fractures according to an embodiment of this utility model;

[0023] Figure 6 This is a right view of the calcaneal fracture minimally invasive three-dimensional frame internal fixation screw implantation guide according to an embodiment of the present invention;

[0024] Figure 7 This is a left view of the calcaneal fracture minimally invasive three-dimensional frame internal fixation screw implantation guide according to an embodiment of the present invention;

[0025] In the diagram: 1. Cross arm of U-shaped guide frame; 101. Proximal fixing hole of cross arm; 102. Distal fixing hole of cross arm; 2. Short arm of U-shaped guide frame; 201. Fixing hole of short arm; 3. Long arm of U-shaped guide frame; 301. Proximal sleeve hole of long arm; 302. Distal sleeve hole of long arm; 303. Fixing screw of second sleeve hole; 304. Fixing screw of first sleeve hole; 4. First sleeve; 5. Second sleeve. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art are within the protection scope of the present utility model.

[0027] It should be understood that in the description of the embodiments of this utility model, the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of the embodiments of this utility model, "several" means two or more, unless otherwise explicitly specified.

[0028] like Figure 1-4 As shown, the minimally invasive three-dimensional frame internal fixation screw implantation guide for calcaneal fractures according to an embodiment of this utility model includes a U-shaped guide frame for determining the position and direction of the guide pin. The U-shaped guide frame is provided with a sleeve for determining the entry point of the guide pin and limiting the direction of the guide pin. The U-shaped guide frame includes a U-shaped guide frame horizontal arm 1 and U-shaped guide frame short arms 2 and U-shaped guide frame long arms 3 disposed on both sides of the U-shaped guide frame horizontal arm 1. The U-shaped guide frame short arms 2 and U-shaped guide frame long arms 3 are arranged parallel to each other and are both perpendicular to the U-shaped guide frame horizontal arm 1. The U-shaped guide frame horizontal arm 1 is provided with an oblique horizontal arm proximal fixation hole 101 and a horizontal arm distal fixation hole 102. The U-shaped guide frame short arm 2 is provided with a longitudinally penetrating short arm fixation hole 201. The U-shaped guide frame long arm 3 is provided with two transversely penetrating sleeve holes. Two sleeves are respectively inserted into the two sleeve holes. The sleeves are fixedly connected to the U-shaped guide frame long arms 3 by screws.

[0029] According to the calcaneal fracture minimally invasive three-dimensional frame internal fixation screw implantation guide described in an embodiment of the present invention, in a specific embodiment, the two transversely penetrating sleeve holes on the long arm 3 of the U-shaped guide frame are, from top to bottom, the distal sleeve hole 302 and the proximal sleeve hole 301 of the long arm. The sleeve includes a first sleeve 4 and a second sleeve 5. The second sleeve 5 is provided through the distal sleeve hole 302 of the long arm, and the first sleeve 4 is provided through the proximal sleeve hole 301 of the long arm.

[0030] According to the calcaneal fracture minimally invasive three-dimensional frame internal fixation screw implantation guide described in the embodiment of this utility model, in a specific embodiment, the first sleeve 4 and the long arm 3 of the U-shaped guide frame are fixedly connected by a first sleeve hole fixing screw 304, and the second sleeve 5 and the long arm 3 of the U-shaped guide frame are fixedly connected by a second sleeve hole fixing screw 303.

[0031] According to the embodiment of the present invention, the calcaneal fracture minimally invasive three-dimensional frame internal fixation screw implantation guide is, in a specific embodiment, the U-shaped guide frame transverse arm 1, the U-shaped guide frame short arm 2 and the U-shaped guide frame long arm 3 are integrally formed.

[0032] According to the calcaneal fracture minimally invasive three-dimensional frame internal fixation screw implantation guide described in the present invention, in a specific embodiment, the proximal fixation hole 101 and the distal fixation hole 102 of the transverse arm are both located at one-third node of the transverse arm 1 of the U-shaped guide frame.

[0033] According to the embodiment of the present invention, in a specific embodiment of the minimally invasive three-dimensional frame internal fixation screw implantation guide for calcaneal fractures, the upper end of the short arm 2 of the U-shaped guide frame is horizontally aligned with the midpoint between the proximal sleeve hole 301 and the distal sleeve hole 302 of the long arm.

[0034] According to the embodiment of the present invention, in a specific embodiment of the minimally invasive three-dimensional frame internal fixation screw implantation guide for calcaneal fractures, the upper end of the short arm 2 of the U-shaped guide frame is 5mm away from the first sleeve 4 and the second sleeve 5.

[0035] According to the calcaneal fracture minimally invasive three-dimensional frame internal fixation screw implantation guide described in this utility model embodiment, in a specific embodiment, the diameter of the first sleeve 4 and the second sleeve 5 is both 2.8mm, and the diameter of the distal sleeve hole 302 and the proximal sleeve hole 301 of the long arm is adapted to the diameter of the first sleeve 4 and the second sleeve 5.

[0036] According to the calcaneal fracture minimally invasive three-dimensional frame internal fixation screw implantation guide described in the embodiment of this utility model, in a specific embodiment, the proximal sleeve hole 301 of the long arm, the first sleeve 4, and the distal sleeve hole 302 of the long arm and the second sleeve 5 are all arranged parallel to the transverse arm 1 of the U-shaped guide frame, and the vertical distance between the proximal sleeve hole 301 of the long arm and the distal sleeve hole 302 of the long arm is 10mm.

[0037] To facilitate understanding of the above-mentioned technical solutions of this utility model, the following detailed description of the above-mentioned technical solutions of this utility model is provided through specific usage methods.

[0038] In practical use, the calcaneal fracture is first reduced by traction, and the fractured articular surface fragments are reduced by incision of the sinus tarsi, resulting in fixation of the articular surface and suspensory malformation.

[0039] Holding the U-shaped guide, place the short arm 2 of the U-shaped guide frame in the upper third of the proximal side of the calcaneus joint. Insert a fine Kirschner wire for fixation through the short arm fixation hole 201 of the short arm of the U-shaped guide frame. Insert a second sleeve 5 into the distal sleeve hole on the long arm 2 of the U-shaped guide frame, abutting against the lateral edge of the Achilles tendon in the middle of the calcaneal tuberosity. Insert another fixation screw through the proximal fixation hole 101 of the transverse arm 1 of the U-shaped guide frame. Insert the guide pin of the lateral column hollow screw through the second sleeve 5.

[0040] Using a handheld guide, the short arm 2 of the U-shaped guide frame is inserted through a tarsal incision and positioned against the suspensory calcaneus. A fixation pin is then inserted through the fixation hole 201 in the short arm. The transverse arm 1 and the long arm 3 of the U-shaped guide frame are adjusted. A first sleeve 4 is inserted through the proximal hole of the long arm 3, abutting against the skin below and medial to the medial border of the Achilles tendon. This serves as the entry point for the medial column hollow screw guide pin. Another fixation guide pin is then inserted through the transverse arm hole. The guide pin for the medial column hollow screw is then inserted through the proximal first sleeve 4 towards the fracture fragment at the suspensory calcaneus.

[0041] C-arm fluoroscopy was used to take a lateral axial view of the calcaneus to ensure accurate placement of the guide pin, measure the depth of the guide pin, and replace the cannulated screws to fix the medial and lateral columns of the calcaneus.

[0042] In summary, by utilizing the above-mentioned technical solution of this utility model, the patient's calcaneal fracture can be more fully reduced, the three-dimensional frame internal fixation can be reliable, and there is no need for external fixation with plaster after surgery. Early functional training can be carried out, and the patient can walk on the ground early, thereby achieving the beneficial technical effect of greatly shortening the rehabilitation time.

[0043] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A minimally invasive three-dimensional frame internal fixation screw implantation guide for calcaneal fracture, characterized in that, The device includes a U-shaped guide frame for determining the position and direction of the guide needle. The U-shaped guide frame is provided with a sleeve for determining the needle entry point and limiting the direction of the guide needle. The U-shaped guide frame includes a U-shaped guide frame horizontal arm (1) and U-shaped guide frame short arms (2) and U-shaped guide frame long arms (3) arranged on both sides of the U-shaped guide frame horizontal arm (1). The U-shaped guide frame short arms (2) and U-shaped guide frame long arms (3) are arranged parallel to each other and are perpendicular to the U-shaped guide frame horizontal arm (1). The U-shaped guide frame horizontal arm (1) is provided with an oblique horizontal arm proximal fixing hole (101) and a horizontal arm distal fixing hole (102). The U-shaped guide frame short arm (2) is provided with a short arm fixing hole (201) that runs through it longitudinally. The U-shaped guide frame long arm (3) is provided with two sleeve holes that run through it laterally. Two sleeves are respectively inserted into the two sleeve holes. The sleeves are fixedly connected to the U-shaped guide frame long arm (3) by screws.

2. The minimally invasive three-dimensional frame of calcaneus fracture internal fixation screw implantation guide according to claim 1, characterized in that, The two sleeve holes that pass through the long arm (3) of the U-shaped guide frame are, from top to bottom, the long arm distal sleeve hole (302) and the long arm proximal sleeve hole (301). The sleeve includes a first sleeve (4) and a second sleeve (5). The second sleeve (5) is provided through the long arm distal sleeve hole (302), and the first sleeve (4) is provided through the long arm proximal sleeve hole (301).

3. The calcaneal fracture minimally invasive three-dimensional frame internal fixation screw implantation guide according to claim 2, characterized in that, The first sleeve (4) is fixedly connected to the long arm (3) of the U-shaped guide frame by a first sleeve hole fixing screw (304), and the second sleeve (5) is fixedly connected to the long arm (3) of the U-shaped guide frame by a second sleeve hole fixing screw (303).

4. The minimally invasive three-dimensional framing internal screw fixation of a calcaneal fracture implant guide according to claim 1, wherein, The U-shaped guide frame cross arm (1), U-shaped guide frame short arm (2) and U-shaped guide frame long arm (3) are integrally formed.

5. The minimally invasive three-dimensional framing internal screw fixation of a calcaneal fracture implant guide according to claim 1, wherein, The near-end fixing hole (101) and the far-end fixing hole (102) of the cross arm are both located at one-third node of the cross arm (1) of the U-shaped guide frame.

6. The minimally invasive three-dimensional framing internal screw fixation of a calcaneal fracture implant guide according to claim 2, wherein, The upper end of the short arm (2) of the U-shaped guide frame is horizontally aligned with the midpoint between the near end sleeve hole (301) and the far end sleeve hole (302) of the long arm.

7. The minimally invasive three-dimensional framing internal screw fixation of a calcaneal fracture implant guide according to claim 6, wherein, The vertical distance between the upper end of the short arm (2) of the U-shaped guide frame and the first sleeve (4) and the second sleeve (5) is 5mm.

8. The minimally invasive three-dimensional framing internal screw fixation of a calcaneal fracture implant guide according to claim 2, wherein, The diameter of the first sleeve (4) and the second sleeve (5) is 2.8 mm. The diameter of the distal sleeve hole (302) and the proximal sleeve hole (301) of the long arm is adapted to the diameter of the first sleeve (4) and the second sleeve (5).

9. The minimally invasive three-dimensional framing internal screw fixation of a calcaneal fracture implant guide according to claim 2, wherein, The proximal sleeve hole (301), the first sleeve (4), the distal sleeve hole (302), and the second sleeve (5) of the long arm are all arranged parallel to the cross arm (1) of the U-shaped guide frame, and the vertical distance between the proximal sleeve hole (301) and the distal sleeve hole (302) of the long arm is 10mm.

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