CN111227902A - Reaming device for orthopedics - Google Patents

Abstract

The invention discloses an orthopedic hole reaming device. By rotating the operating handle, the helical screw rod drives the connecting slider to slide in the extending rod, thereby driving the connecting rod and the resisting rod. The transverse rods slide horizontally along the long direction of the extending rod respectively, so as to resist the telescopic rod in the inclined hole, so that the telescopic rod extends out of the fixed rod in a direction away from the extending rod, and then The first cutter head and the second cutter head are driven to expand and contract in the direction away from the extending rod, so that the area enclosed by the first cutter head and the second cutter head is enlarged, and the The first cutter head and the second cutter head are retracted, so that the orthopedic reaming device can enter the interior of the bone cavity through a smaller hole, thereby reducing the incision area, thereby reducing the injury to the patient during surgery, make surgery better.

Description

An orthopedic hole reaming device

technical field

The invention relates to the field of medical instruments, in particular to an orthopedic hole reaming device.

Background technique

At present, with the development of non-invasive and mildly painful medical technology, orthopedic medical devices have been greatly improved and developed; for example, bone drills, bone drill stainless steel sleeves, and bone cement syringes have played a huge role in the rehabilitation of patients.

In orthopedic surgery, it is often necessary to ream the bone marrow cavity or vertebral body. The reaming method is to use a mechanical reaming device to ream the hole, and insert the screw hole runner into the bone marrow cavity for cutting and expansion. The size of the reaming device is fixed. If it is necessary to extend into the bone marrow cavity or the vertebral body to ream the other side, only the protruding side can be cut to allow the reaming device to enter, thus increasing the reaming area. Make the patient's trauma surface larger, thereby affecting the surgical effect.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide an orthopedic hole reaming device, which aims to solve the problem in the prior art that when the hole needs to be inserted into the bone marrow cavity or the vertebral body to ream the other side, only the inserted side can be cut. It is a technical problem that the reaming device can enter, thus increasing the reaming area, making the patient's wound surface larger, and affecting the operation effect.

In order to achieve the above purpose, an orthopaedic hole reaming device adopted in the present invention includes an extending rod, an operating handle, a sliding assembly and a reaming assembly; the extending rod has a through hole and a sliding groove, and the through hole is located at the the inside of the sticking rod, and the opening is toward the free end of the sticking rod; the chute is located on the outer circumference of the sticking rod The operating handle is rotatably connected with the extending rod, and is located at the end of the extending rod away from the chute; the sliding assembly is slidably connected with the extending rod and rotates with the operating handle connected and located inside the extending rod, the reaming assembly is slidably connected with the extending rod, and is located on the outer circumference of the extending rod; the reaming assembly includes a connecting rod, a resisting cross rod, a fixed A rod, a telescopic rod, a first cutter head and a second cutter head, the connecting rod is slidably connected with the extending rod, and extends into the through hole through the chute, and cooperates with the sliding assembly, The sliding component drives the connecting rod to slide, the resisting transverse rod is fixedly connected with the connecting rod, and is located at the end of the connecting rod away from the extending rod, and the fixing rod is fixed to the extending rod connected and located on the outer circumference of the chute, the telescopic rod is slidably connected with the fixed rod, and is slidably connected with the resisting cross rod, and is located between the fixed rod and the connecting rod, the telescopic rod The rod has an inclined hole, the inclined hole is located on the outer circumference of the telescopic rod, extends into the interior of the telescopic rod, and cooperates with the resisting cross rod, and the first cutter head is rotatably connected with the telescopic rod, and is located at the end of the telescopic rod away from the fixed rod, the second cutter head is rotatably connected to the telescopic rod, and is located at the end of the telescopic rod close to the first cutter head, the second cutter head matched with the first cutter head.

Wherein, the sliding assembly includes a screw screw rod and a connecting slider, the screw screw rod is fixedly connected with the operating handle, is rotatably connected with the extending rod, and is located inside the extending rod; the The connecting slider is slidably connected with the extending rod, is rotatably connected with the helical screw, and is fixedly connected with the connecting rod. The connecting slider is located inside the through hole and is close to the chute .

Wherein, the number of the connecting rods is multiple, which are located on the same plane, and evenly surround the outer circumference of the extending rod; the number of the resisting cross rods is multiple, and is consistent with the number of the connecting rods , and are respectively located at one end of the connecting rod away from the extending rod; the number of the fixing rods is multiple, which is consistent with the number of the connecting rods, and are respectively arranged around the outer circumference of the connecting rod; The number of the telescopic rods is multiple, which is consistent with the number of the fixed rods, and is located inside the fixed rod; the number of the first cutter head is multiple, and the number of the second cutter head is the same as that of the fixed rod. The number of the first cutter heads is the same, and is matched with the first cutter heads respectively.

Wherein, the hole reaming assembly further includes an elastic limit card, the elastic limit card is fixedly connected with the telescopic rod, cooperates with the resisting cross rod, and is located on the side of the telescopic rod on the inclined hole the wall, and the elastic limit card limits the resisting crossbar.

Wherein, the hole reaming assembly further includes a first auxiliary blade and a second auxiliary blade, the first auxiliary blade is fixedly connected with the first cutter head, and is located at a position where the first cutter head is away from the extending rod. one side, and is located between the telescopic rod and the second cutter head; the second auxiliary blade is fixedly connected with the second cutter head, and is located at the position where the second cutter head is far from the extending rod one side, and is located between the first cutter head and the telescopic rod.

Wherein, the first cutter head has a first through hole, the through hole is located on the side of the first cutter head close to the first auxiliary blade, and penetrates through the first cutter head toward the direction of the extending rod a cutter head; the first auxiliary blade has a second through hole, the second through hole is located on the side of the first auxiliary blade away from the extending rod, and penetrates through the first auxiliary blade in the direction of the first cutter head The first auxiliary blade penetrates with the first through hole.

Wherein, the reaming assembly further includes a storage box, the storage box is fixedly connected with the fixing rod, and is located on the outer circumference of the fixing rod and faces the direction of the first through hole.

Wherein, the orthopaedic hole reaming device further includes a spreader clip and a pressing component, the spreader clip is rotatably connected to the extending rod through the pressing component, and is located on the outer circumference of the extending rod, and is located at the between the connecting rod and the operating handle, towards the direction of the connecting rod; the pressing component is fixedly connected with the stretcher clip, and is rotatably connected with the extending rod, and is located close to the stretcher clip one side of the operating handle.

Wherein, the pressing component includes a collar and a pressing handle, the collar is rotatably connected with the extending rod, and is rotatably connected with the expansion clip, and is located between the intrusion rod and the expansion clip the pressing handle is fixedly connected with the opening clip, is rotatably connected with the collar, and is located on the side of the opening clip close to the operating handle.

Wherein, the spreader clip has abutting protrusions, and the abutment protrusions are located on the side of the spreader clip away from the extending rod, and the number of the abutting protrusions is multiple, and the abutting protrusions are evenly arranged on the spreader surface of the clip.

According to an orthopedic hole reaming device of the present invention, by rotating the operating handle, the helical screw rod drives the connecting slider to slide in the extending rod, thereby driving the connecting rod and the resisting transverse rod. The rods slide horizontally along the long direction of the extending rod respectively, and then resist the telescopic rod in the inclined hole, so that the telescopic rod extends out of the fixed rod in a direction away from the extending rod, thereby driving the The first cutter head and the second cutter head extend and retract in the direction away from the extending rod, so that the area enclosed by the first cutter head and the second cutter head is enlarged, so that the The first cutter head and the second cutter head are retracted, so that the orthopaedic reaming device can enter the bone cavity through a smaller hole, which reduces the incision area, thereby reducing the injury to the patient during the operation, so that the Surgery is better.

Description of drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic diagram of the connection structure of the connecting rod and the extending rod of the present invention.

FIG. 2 is a schematic diagram of the connection structure of the telescopic rod and the resisting cross rod of the present invention.

FIG. 3 is a schematic view of the structure of the hole reaming assembly of the present invention.

FIG. 4 is an enlarged view of the structure of the first cutter head of the present invention.

FIG. 5 is a schematic diagram of the connection structure of the extending rod and the screw screw according to the present invention.

FIG. 6 is a schematic diagram of the connection structure of the opening clip and the pressing assembly of the present invention.

In the picture: 1- Extending rod, 2- Operating handle, 3- Sliding component, 4- Reaming component, 5- Spreading clip, 6- Pressing component, 11- Through hole, 12- Chute, 31- Spiral wire Rod, 32-connecting slider, 41-connecting rod, 42-resisting crossbar, 43-fixed rod, 44-telescopic rod, 45-first cutter head, 46-second cutter head, 47-elastic limit card, 48-First auxiliary blade, 49-Second auxiliary blade, 50-Storage box, 51-Abutting protrusion, 61-Loop, 62-Press handle, 100-Orthopedic hole reaming device, 441-Tilted hole, 451 - First through hole, 481 - Second through hole.

Detailed ways

The following describes in detail the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to explain the present invention and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", The orientations or positional relationships indicated by "horizontal", "top", "bottom", "inside", "outside", etc. are based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than An indication or implication that the referred device or element must have a particular orientation, be constructed and operate in a particular orientation, is not to be construed as a limitation of the invention. In addition, in the description of the present invention, "plurality" means two or more, unless otherwise expressly and specifically defined.

In the first example of this embodiment:

Referring to FIGS. 1 to 3 , the present invention provides an orthopedic hole reaming device 100 , which includes an extending rod 1 , an operating handle 2 , a sliding assembly 3 and a reaming assembly 4 ; the extending rod 1 has a through hole 11 and a sliding slot 12, the through hole 11 is located inside the extending rod 1 and opens toward the free end of the extending rod 1, the sliding groove 12 is located on the outer circumference of the extending rod 1, and The operating handle 2 is rotatably connected to the intrusion rod 1 and is located at the position of the intrusion rod 1 away from the chute 12 . one end; the sliding assembly 3 is slidably connected with the extending rod 1, and is rotatably connected with the operating handle 2, and is located inside the extending rod 1, and the reaming assembly 4 is connected to the extending rod 1 is slidably connected and located on the outer circumference of the extending rod 1; the reaming assembly 4 includes a connecting rod 41, a resisting cross rod 42, a fixing rod 43, the extending rod 1, a first cutter head 45 and a second cutter head 46. The connecting rod 41 is slidably connected with the extending rod 1, and extends into the through hole 11 through the sliding slot 12, and cooperates with the sliding assembly 3, which drives the The connecting rod 41 slides, the resisting crossbar 42 is fixedly connected to the connecting rod 41 and is located at the end of the connecting rod 41 away from the extending rod 1 , and the fixing rod 43 is fixed to the extending rod 1 The telescopic rod 44 is slidably connected with the fixing rod 43 and is slidably connected with the resisting cross rod 42, and is located between the fixing rod 43 and the connecting rod 41 In between, the telescopic rod 44 has an inclined hole 441, the inclined hole 441 is located on the outer circumference of the telescopic rod 44, extends into the interior of the telescopic rod 44, and cooperates with the resisting cross rod 42, the The first cutter head 45 is rotatably connected to the telescopic rod 44 and is located at the end of the telescopic rod 44 away from the fixed rod 43 , and the second cutter head 46 is rotatably connected to the telescopic rod 44 and located at the end of the telescopic rod 44 The telescopic rod 44 is close to one end of the first cutter head 45 , and the second cutter head 46 is matched with the first cutter head 45 .

Further, the sliding assembly 3 includes a screw screw 31 and a connecting slider 32, the screw screw 31 is fixedly connected with the operating handle 2, and is rotatably connected with the extending rod 1, and is located in the extending rod 1. into the inside of the rod 1; the connecting slider 32 is slidably connected with the extending rod 1, is rotatably connected with the screw screw 31, and is fixedly connected with the connecting rod 41, and the connecting slider 32 is located at Inside the through hole 11 and close to the chute 12 .

Further, the number of the connecting rods 41 is multiple, and located on the same plane, and evenly surrounds the outer circumference of the extending rod 1; the number of the resisting cross rods 42 is multiple, and is connected with the The number of the rods 41 is the same, and they are respectively located at one end of the connecting rod 41 away from the extending rod 1; On the outer circumference of the connecting rod 41; the number of the telescopic rods 44 is multiple, which is consistent with the number of the fixing rods 43, and is located inside the fixing rod 43; the number of the first cutter heads 45 The number of the second cutter heads 46 is the same as the number of the first cutter heads 45 , and is matched with the first cutter heads 45 respectively.

Further, the reaming assembly 4 further includes an elastic limit card 47 , the elastic limit card 47 is fixedly connected with the telescopic rod 44 , cooperates with the resisting cross rod 42 , and is located on the telescopic rod 44 On the side wall of the inclined hole 441 , the elastic limiting card 47 limits the resisting cross bar 42 .

In the present embodiment, the extending rod 1 is a rectangular body with a hollow interior, and the hollow interior of the rectangular body is a rectangular groove. The front end of the extending rod 1 is fixed with a guide soft rod for extending into the bone marrow cavity. , the operating handle 2 is rotatably installed at one end of the extending rod 1 away from the guide soft rod, the outer shell of the operating handle 2 is T-shaped, and the bottom is rotated to limit the end of the extending rod 1, It can be rotated axially around the center line of the extending rod 1. The connecting slider 32 is a rectangular slider and is horizontally clamped with the rectangular inner surface of the extending rod 1. There is a threaded hole in the center that matches the screw rod 31, and the operating handle 2 drives the screw rod 31 to rotate, thereby driving the connecting slider 32 to slide along the long direction of the extending rod 1; the There are four sliding grooves 12 on the side of the extending rod 1 , which are arranged on the outer surface of the extending rod 1 , are located in four mutually perpendicular directions, and are horizontally arranged along the long direction of the extending rod 1 . , the connecting rods 41 and the connecting sliders 32 are integrally formed, and the number is four, which are respectively fixed on the four sides of the connecting sliders 32 on the same horizontal plane, and are passed through the four sliding grooves 12 In the extending rod 1 , one end of the four connecting rods 41 away from the connecting slider 32 is respectively connected with the four resisting transverse rods 42 , and the central axis of the resisting transverse rod 42 is the same as that of the connecting rod 41 . The central axis is vertical and perpendicular to the central axis of the extending rod 1 , the fixing rod 43 is an inner hollow shell, and the four fixing rods 43 are respectively located on the outer circumference of the four connecting rods 41 , and The bottom of the fixing rod 43 is threadedly fixed on the outer circumference of the extending rod 1 . The fixing rod 43 is a rectangular body with a hollow interior, and is sleeved on the outer circumference of the chute 12 . The shape is the same as that of the fixed rod 43, and it is slidably matched with the inner side wall of the fixed rod 43. The interior of the telescopic rod 44 is hollow, and the bottom has an opening, and faces the extending rod 1. Four of the telescopic rods 44 are respectively slidably connected to the inside of the four fixing rods 43, the two sides of the telescopic rod 44 have the inclined holes 441, the direction of the inclined holes 441 is the same as the extending direction of the extending rod 1, The surface of the telescopic rod 44 is inclined at 45°, and the front and rear ends face the right-angle corners of the rectangular side plate of the telescopic rod 44. The two ends of the resisting cross rod 42 respectively extend into the inclined holes 441. Under the driving of the connecting slider 32 and the connecting rod 41 , the resisting cross bar 42 slides horizontally along the long direction of the extending rod 1 , and is connected with the inclined hole 441 of the telescopic rod 44 . The elastic limit card 47 is made of silicone material, and is bonded to the groove wall of the inclined hole 441, and by elastically pressing the resisting crossbar 42, the resisting crossbar 42 and the The telescopic rod 44 is limited by a plurality of the elastic limit cards 47, and then the resisting cross rod 42 is limited in the case of no external force, and the four first cutter heads 45 are respectively connected through the connecting ring Rotationally fixed on four of the telescopic rods 44 away from the fixed rods At one end of 43, the bottom ends of the four second cutter heads 46 are respectively rotatably connected to the first cutter head 45 at the end of the telescopic rod 44 away from the fixed rod 43. The top end is rotatably connected to the first cutter head 45 through a rotating shaft, and the bottom of each two of the first cutter head 45 and the second cutter head 46 is rotatably connected to the end of the telescopic rod 44 away from the fixed rod 43 . , so that the first cutter head 45 and the second cutter head 46 are retracted and opened under the drive of the telescopic rod 44 , in this way, the operating handle 2 is rotated to make the screw screw 31 and the The connecting slider 32 rotates threadedly, which drives the connecting slider 32 to slide in the extending rod 1 , thereby driving the four connecting rods 41 and the four resisting transverse rods 42 along the extending rod 1 respectively. It slides horizontally in the longitudinal direction of the slanting hole 441 , and then resists the telescopic rod 44 in the inclined hole 441 , so that the telescopic rod 44 is pushed out of the rod 1 away from the extending rod 1 by the thrust of the resisting cross rod 42 . fixing rod 43, and then driving the first cutter head 45 and the second cutter head 46, which are connected to the end of the telescopic rod 44 away from the fixing rod 43, to expand and contract in the direction away from the insertion rod 1. The area enclosed by the four first cutter heads 45 and the second cutter head 46 is determined, so that the first cutter head 45 and the second cutter head 46 can be retracted, so that the orthopaedic The hole reaming device 100 can enter the inside of the bone cavity through a smaller hole, reducing the incision area, thereby reducing the injury to the patient during the operation, and making the operation effect better.

In the second example of this embodiment:

Referring to FIGS. 1 to 5 , the present invention provides an orthopedic hole reaming device 100 , which includes an extending rod 1 , an operating handle 2 , a sliding assembly 3 and a reaming assembly 4 ; the extending rod 1 has a through hole 11 and a sliding slot 12, the through hole 11 is located inside the extending rod 1 and opens toward the free end of the extending rod 1, the sliding groove 12 is located on the outer circumference of the extending rod 1, and The operating handle 2 is rotatably connected to the intrusion rod 1 and is located at the position of the intrusion rod 1 away from the chute 12 . one end; the sliding assembly 3 is slidably connected with the extending rod 1, and is rotatably connected with the operating handle 2, and is located inside the extending rod 1, and the reaming assembly 4 is connected to the extending rod 1 is slidably connected and is located on the outer circumference of the extending rod 1; the reaming assembly 4 includes a connecting rod 41, a resisting cross rod 42, a fixed rod 43, a telescopic rod 44, a first cutter head 45 and a second cutter head 46 , the connecting rod 41 is slidably connected with the extending rod 1, and extends into the through hole 11 through the sliding slot 12, and cooperates with the sliding component 3, and the sliding component 3 drives the connection When the rod 41 slides, the resisting crossbar 42 is fixedly connected with the connecting rod 41 and is located at the end of the connecting rod 41 away from the extending rod 1 , and the fixing rod 43 is fixedly connected with the extending rod 1 , and is located on the outer circumference of the chute 12, the telescopic rod 44 is slidably connected with the fixing rod 43, and is slidably connected with the resisting cross rod 42, and is located between the fixing rod 43 and the connecting rod 41 During the time, the telescopic rod 44 has an inclined hole 441, the inclined hole 441 is located on the outer circumference of the telescopic rod 44, and extends into the interior of the telescopic rod 44, and cooperates with the resisting cross rod 42, the first A cutter head 45 is rotatably connected to the telescopic rod 44 and is located at the end of the telescopic rod 44 away from the fixed rod 43 , and the second cutter head 46 is rotatably connected to the telescopic rod 44 and is located at the end of the telescopic rod 44 . The rod 44 is close to one end of the first cutter head 45 , and the second cutter head 46 cooperates with the first cutter head 45 .

Further, the reaming assembly 4 further includes a first auxiliary blade 48 and a second auxiliary blade 49 . The first auxiliary blade 48 is fixedly connected with the first cutter head 45 and is located at the first cutter head 45 The side away from the extending rod 1 is located between the telescopic rod 44 and the second cutter head 46; the second auxiliary blade 49 is fixedly connected with the second cutter head 46 and is located at the The second cutter head 46 is located away from the side of the extending rod 1 , and is located between the first cutter head 45 and the telescopic rod 44 .

Further, the first cutter head 45 has a first through hole 451 , and the through hole 11 is located on the side of the first cutter head 45 close to the first auxiliary blade 48 and faces the extending rod 1 The direction of the first blade 45 runs through the first blade 45; the first auxiliary blade 48 has a second through hole 481, and the second through hole 481 is located on the side of the first auxiliary blade 48 away from the extending rod , and penetrates the first auxiliary blade 48 toward the direction of the first cutter head 45 , and passes through the first through hole 451 .

Further, the reaming assembly 4 further includes a storage box 50 , the storage box 50 is fixedly connected with the fixing rod 43 and is located on the outer circumference of the fixing rod 43 and faces the direction of the first through hole 451 .

In this embodiment, the first auxiliary blade 48 is integrally mounted on the end of the first cutter head 45 facing the telescopic rod 44 , and the first auxiliary blade 48 has a plurality of pieces facing away from the telescopic rod The blade protruding in the direction of 44 is convenient for cutting. The second auxiliary blade 49 has the same shape as the first auxiliary blade 48 and is integrally fixed on the outer surface of the second cutter head 46, so that the first blade 49 has the same shape as the first auxiliary blade 48. The head 45 and the second cutter head 46 are opened under the drive of the telescopic rod 44, and can be cut by the first auxiliary blade 48 and the second auxiliary blade 49; the first cutter head 45 has The first through-hole 451 penetrates through, the first auxiliary blade 48 has the second through-hole 481 through which the first through-hole 451 and the second through-hole 481 penetrate each other and extend into each other. Adjacent to the space between the two fixing rods 43 , the storage box 50 is threadedly fixed in the area between the two adjacent fixing rods 43 , and the opening faces the direction of the first through hole 451 . When the first cutter head 45 , the second cutter head 46 , the first auxiliary blade 48 and the second auxiliary blade 49 cut the bone marrow, many small bone chips are generated. Enter the second through hole 481, and then enter the storage box 50 through the second through hole 481 for collection, so as to reduce the indwelling of bone debris in the bone cavity, which will hinder the operation, and further improve the operation effect. better.

In the third example of this embodiment:

Referring to FIGS. 1 to 6 , the present invention provides an orthopedic hole reaming device 100 , which includes an extending rod 1 , an operating handle 2 , a sliding assembly 3 and a reaming assembly 4 ; the extending rod 1 has a through hole 11 and a sliding slot 12, the through hole 11 is located inside the extending rod 1 and opens toward the free end of the extending rod 1, the sliding groove 12 is located on the outer circumference of the extending rod 1, and The operating handle 2 is rotatably connected to the intrusion rod 1 and is located at the position of the intrusion rod 1 away from the chute 12 . one end; the sliding assembly 3 is slidably connected with the extending rod 1, and is rotatably connected with the operating handle 2, and is located inside the extending rod 1, and the reaming assembly 4 is connected to the extending rod 1 is slidably connected and is located on the outer circumference of the extending rod 1; the reaming assembly 4 includes a connecting rod 41, a resisting cross rod 42, a fixed rod 43, a telescopic rod 44, a first cutter head 45 and a second cutter head 46 , the connecting rod 41 is slidably connected with the extending rod 1, and extends into the through hole 11 through the sliding slot 12, and cooperates with the sliding component 3, and the sliding component 3 drives the connection When the rod 41 slides, the resisting crossbar 42 is fixedly connected with the connecting rod 41 and is located at the end of the connecting rod 41 away from the extending rod 1 , and the fixing rod 43 is fixedly connected with the extending rod 1 , and is located on the outer circumference of the chute 12, the telescopic rod 44 is slidably connected with the fixing rod 43, and is slidably connected with the resisting cross rod 42, and is located between the fixing rod 43 and the connecting rod 41 During the time, the telescopic rod 44 has an inclined hole 441, the inclined hole 441 is located on the outer circumference of the telescopic rod 44, and extends into the interior of the telescopic rod 44, and cooperates with the resisting cross rod 42, the first A cutter head 45 is rotatably connected to the telescopic rod 44 and is located at the end of the telescopic rod 44 away from the fixed rod 43 , and the second cutter head 46 is rotatably connected to the telescopic rod 44 and is located at the end of the telescopic rod 44 . The rod 44 is close to one end of the first cutter head 45 , and the second cutter head 46 cooperates with the first cutter head 45 .

Further, the orthopedic hole reaming device 100 further includes a distraction clip 5 and a pressing component 6 . The outer circumference of the rod 1 is located between the connecting rod 41 and the operating handle 2, facing the direction of the connecting rod 41; the pressing component 6 is fixedly connected to the opening clip 5, and is The entry rod 1 is rotatably connected, and is located on the side of the opening clip 5 close to the operating handle 2 .

Further, the pressing assembly 6 includes a collar 61 and a pressing handle 62. The collar 61 is rotatably connected to the extending rod 1 and is rotatably connected to the spreading clip 5, and is located in the extending rod 1 and the opening clip 5; the pressing handle 62 is fixedly connected with the opening clip 5, and is rotatably connected with the collar 61, and is located in the opening clip 5 close to the operating handle 2 side.

Further, the opening clip 5 has abutting protrusions 51 , and the abutting protrusions 51 are located on the side of the opening clip 5 away from the extending rod 1 , and the number of the abutting protrusions 51 is multiple and evenly arranged. cloth on the surface of the spreader clip 5 .

In this embodiment, the outer circumference of the extending rod 1 is rotatably sleeved with the collar 61 . The two ends of the collar 61 are respectively connected with the opening clip 5 and the pressing handle 62. The opening clip 5 and the pressing handle 62 are integrally formed, and rotate with the collar 61 through the rotating shaft. Pressing the handle 62, the stretcher 5 is stretched in a direction away from the intrusion rod 1, and the side of the stretcher 5 away from the intrusion rod 1 has the abutting protrusion 51, The abutting protrusions 51 are pads that are in contact with soft tissue, increasing the friction between the stretcher 5 and the soft tissue. During orthopaedic surgery, when the target bone is deep, the cutting blade can be removed first. The first cutter head 45 , the first auxiliary blade 48 , the second cutter head 46 and the second auxiliary blade 49 protrude into the vicinity of the target bone, and by pressing the pressing handle 62 , the support The opening clip 5 is stretched open, and the abutting protrusions 51 are in contact with the soft tissue, and the soft tissue is stretched to both sides, thereby facilitating the observation of the medical staff under the condition of ensuring a small wound opening and making the operation effect better.

The above disclosure is only a preferred embodiment of the present invention, and of course, it cannot limit the scope of rights of the present invention. Those of ordinary skill in the art can understand that all or part of the process for realizing the above-mentioned embodiment can be realized according to the rights of the present invention. The equivalent changes required to be made still belong to the scope covered by the invention.

Claims (10)

1. An orthopedic hole reaming device is characterized in that, comprising extending into rod, operating handle, sliding assembly and reaming assembly; The extending rod has a through hole and a sliding slot, the through hole is located inside the extending rod and has an opening toward the free end of the extending rod, and the sliding groove is located on the outer periphery of the extending rod , and protrudes into the inside of the protruding rod, and penetrates with the through hole, the operating handle is rotatably connected with the protruding rod, and is located at the end of the protruding rod away from the chute; the The sliding assembly is slidably connected with the extending rod, is rotatably connected with the operating handle, and is located inside the extending rod, and the reaming assembly is slidably connected with the extending rod, and is located in the extending rod the outer circumference of the rod; The hole reaming assembly includes a connecting rod, a resisting cross rod, a fixing rod, a telescopic rod, a first cutter head and a second cutter head, and the connecting rod is slidably connected with the extending rod and protrudes through the chute. inside the through hole and in cooperation with the sliding component, the sliding component drives the connecting rod to slide, the resisting transverse rod is fixedly connected with the connecting rod, and is located on the connecting rod away from the extending rod At one end, the fixing rod is fixedly connected with the extending rod and is located on the outer periphery of the chute, the telescopic rod is slidably connected with the fixing rod, and is slidably connected with the resisting cross rod, and is located at the Between the fixing rod and the connecting rod, the telescopic rod has an inclined hole, the inclined hole is located on the outer circumference of the telescopic rod, extends into the interior of the telescopic rod, and cooperates with the resisting cross rod, The first cutter head is rotatably connected to the telescopic rod and is located at the end of the telescopic rod away from the fixed rod, and the second cutter head is rotatably connected to the telescopic rod and is located near the telescopic rod. One end of the first cutter head, the second cutter head is matched with the first cutter head. 2. The orthopedic hole reaming device according to claim 1, characterized in that, The sliding assembly includes a screw screw rod and a connecting slider, the screw screw rod is fixedly connected with the operating handle, is rotatably connected with the extending rod, and is located inside the extending rod; the connecting slide The block is slidably connected with the extending rod, rotatably connected with the helical screw rod, and fixedly connected with the connecting rod, and the connecting slider is located inside the through hole and close to the chute. 3. The orthopedic hole reaming device according to claim 2, characterized in that, The number of the connecting rods is multiple, and located on the same plane, and evenly surrounds the outer circumference of the extending rod; the number of the resisting cross rods is multiple, and is consistent with the number of the connecting rods, and are respectively located at one end of the connecting rod away from the extending rod; the number of the fixing rods is multiple, which is consistent with the number of the connecting rods, and are respectively arranged around the outer circumference of the connecting rod; The number of rods is multiple, which is consistent with the number of the fixed rods, and is located inside the fixed rod; the number of the first cutter heads is multiple, and the number of the second cutter heads is the same as that of the The number of the first cutter heads is the same, and is matched with the first cutter heads respectively. 4. The orthopedic hole reaming device according to claim 3, characterized in that, The reaming assembly further includes an elastic limit card, the elastic limit card is fixedly connected with the telescopic rod, cooperates with the resisting cross rod, and is located on the side wall of the telescopic rod in the inclined hole, The elastic limiting card limits the resisting crossbar. 5. The orthopedic hole reaming device according to claim 1, characterized in that, The hole reaming assembly further includes a first auxiliary blade and a second auxiliary blade, the first auxiliary blade is fixedly connected with the first cutter head, and is located on the side of the first cutter head away from the extending rod , and is located between the telescopic rod and the second cutter head; the second auxiliary blade is fixedly connected to the second cutter head, and is located on the side of the second cutter head away from the extending rod , and is located between the first cutter head and the telescopic rod. 6. The orthopedic hole reaming device according to claim 5, characterized in that, The first cutter head has a first through hole, the through hole is located on the side of the first cutter head close to the first auxiliary blade, and penetrates the first cutter head toward the direction of the extending rod ; The first auxiliary blade has a second through hole, the second through hole is located on the side of the first auxiliary blade away from the extending rod, and penetrates through the first auxiliary blade in the direction of the first cutter head. An auxiliary blade penetrates through the first through hole. 7. The orthopedic hole reaming device according to claim 6, characterized in that, The reaming assembly further includes a storage box, the storage box is fixedly connected with the fixing rod, and is located on the outer circumference of the fixing rod and faces the direction of the first through hole. 8. The orthopedic hole reaming device according to claim 1, characterized in that, The orthopedic hole reaming device further comprises a spreading clip and a pressing component, the spreading clip is rotatably connected with the extending rod through the pressing component, and is located on the outer circumference of the extending rod and is located in the connection between the lever and the operating handle, facing the direction of the connecting rod; the pressing component is fixedly connected with the stretcher clip, and is rotatably connected with the extending rod, and is located near the stretcher clip one side of the handle. 9. The orthopedic hole reaming device according to claim 8, characterized in that, The pressing assembly includes a collar and a pressing handle, the collar is rotatably connected with the extending rod and is rotatably connected with the stretch-open clip, and is located between the stretch-in rod and the stretch-out clip; The pressing handle is fixedly connected with the opening clip, is rotatably connected with the collar, and is located on the side of the opening clip close to the operating handle. 10. The orthopedic hole reaming device according to claim 9, characterized in that, The stretcher has abutting protrusions, the abutting protrusions are located on the side of the stretcher away from the extending rod, the number of which is multiple, and the abutting protrusions are evenly arranged on the side of the stretcher. surface.

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