CN201617897U - Dual-purpose femoral head single-knife sneaking drilling and expanding device - Google Patents

Abstract

The utility model relates to a dual-purpose femoral head single-knife sneaking drilling and expanding device, which is applicable to treating diseases, such as femoral head avascular necrosis and the like via a mechanism of core decompression. The dual-purpose femoral head single-knife sneaking drilling and expanding device comprises a nut cap (1), a bolt (2), a nut (3), a socket hexagonal cylindrical screw (4), an upper cover plate (5), a hand-screwing nut (6), a handle (7), a set screw (8), a sleeve (9), a push-pull screw (10), a push connecting rod (11), a knife edge (12), a sealed end plug (13) and a dowel shaft (14). The dual-purpose femoral head single-knife sneaking drilling and expanding device is characterized in that the hand-screwing nut (6) is provided with a groove, knurls, scales, steps and a thread through hole, the sleeve (9) is provided with steps, scales and slots, the push-pull screw (10) is provided with blind holes and obround holes, and the push connecting rod (11) is provided with inclined steps and slots. An operator uses a trepan to open a tunnel hole directly reaching femoral head at a position of femoral head greater trochanter, then extends the front end of the dual-purpose femoral head single-knife sneaking drilling and expanding device to the hole, adjusts machines and cuts off sequestrums.

Description

The femoral head hilted broadsword moves under water to bore and expands double purpose device

Technical field

This utility model relates to a kind of femoral head hilted broadsword and moves under water and bore to expand double purpose device, by core decompression mechanism, is applicable to diseases such as treatment ischemic necrosis of femoral head.

Background technology

Ischemic necrosis of femoral head is a kind of common disease, all treatments can only be the development speeds of managing to delay the course of disease, femoral head is kept or postpone the time of doing total hip replacement, the sickness rate of present this disease is ascendant trend year by year, be mainly in the youth, disability rate is very high, and its disease can be involved whole hip joint eventually, make the hip joint function forfeiture, have a strong impact on patient's work and social life ability.

For I, II option share head necrosis, the prefered method of generally acknowledging is the core decompression art both at home and abroad, the marrow that lowers capital pressure and then reduction femoral head is intrinsic pressure, again recover endovascular blood flow, make femur head necrosis obtain repairing, alleviate the pain of hip, the core decompression art adopts two kinds of operation approach at present: the one, and through the greater trochanter approach, use trepan, brill, osseous pin in the femoral head internal drilling; The 2nd, cut joint wardrobe cervical region decompression by fenestration.First kind: the patient damages little, but it is insufficient to reduce pressure, and sequestrum can not be removed, and produces heat during boring and can cause the necrosis of tunnel perimeter osteocyte; Second kind: can remove sequestrum, but bigger to patient's damage, and can destroy capital surface texture, increase the weight of the destruction that femoral head blood is transported and be unsuitable for III option share head necrosis.

Summary of the invention

This utility model is just under the prerequisite that keeps the prior art advantage, at capital features of shape, overcome its drawback, provide a kind of boring to expand dual-purpose, selective ablation sequestrum, the patient is damaged femoral head hilted broadsword little, that carry out through greater trochanter move under water to bore and expand double purpose device.

The technical solution of the utility model is as follows:

The femoral head hilted broadsword moves under water to bore and expands double purpose device, by blind nut (1), double-screw bolt (2), nut (3), hexagon socket cap head screw (4), upper cover plate (5), hand rotary nut (6), handle (7), holding screw (8), sleeve (9), push-pull screw (10), promote connecting rod (11), blade (12), seal plug (13), pin axle (14) is formed, it is characterized in that: hand rotary nut (6) has annular groove and its two ends outer surface that annular knurl is arranged, slot part has scale marker, there is step the upper and lower end face, the center tapped through hole; Sleeve (9) left end has step, and outer surface has scale marker, and central through hole, right-hand member have a fluting and two ends that two pin holes are arranged; Push-pull screw (10) left end has external screw thread and tapped blind hole, and a slotted hole is arranged between external screw thread and polished rod; Promoting connecting rod (11) right-hand member is an oblique step and a fluting; Blade (12) right-hand member is an arcuation, and respectively there are rake, hypsokinesis face and sharp knife edges in front and back, and left end has a through hole.

Hand rotary nut (6): there is step the upper and lower end face, pack into behind the handle (7), with its generation gap, be easy to manual rotation, drive screw rod and move forward and backward, control blade abduction, tapped through hole its screw thread in center has two kinds of project organizations: a kind of is the single thread structural design, every rotation one scale blade abduction 0.44mm, maximum abduction radius is 19.3mm, when blade during in the home position hand rotary nut (6) triple turn arrive the maximum abduction of blade position; A kind of is 3 head thread structural design forms, every rotation one scale blade abduction 1.6mm, and maximum abduction radius is 22mm.

Handle (7): signal sign in blade (12) orientation is arranged.

Sleeve (9): the left end step is connected with handle (7), outer surface has scale marker, be beneficial to the control and the accurate location of depth of drive, central through hole is hinged with and seals plug (13), blade (12), promotes connecting rod (11), push-pull screw (10), sleeve (9) can go out plurality of specifications according to its diameter, Design of length, selects for use during for operation.

Push-pull screw (10): tapped blind hole and double-screw bolt (2), nut (3), blind nut (1) connects successively, external screw thread and hand rotary nut (6) are connected on the handle (7), holding screw (8) passes handle (7), sleeve (9) is inserted slotted hole inner control screw rod and is moved forward and backward limiting quantity, external screw thread has two kinds of project organizations: a kind of is the single thread structure, a kind of is 3 head thread structural design forms, hand rotary nut (6) drives screw rod and promotes connecting rod (11) and moves forward and backward, control blade (12) abduction amount, this part has two kinds of project organizations to realize the abduction of blade (12): a kind of is that right-hand member has a step and a pin hole, connect and promote connecting rod (11), and promote connecting rod (11) left end one blind hole and an oval through hole are arranged, push-pull screw (10) pin hole and slotted hole are on same centrage, another kind is that both are the version of one, and its polished rod two ends front-back is a flat horizontal surface and tangent with the polished rod face, and right-hand member fluting portion two ends are circular-arc.

Promote connecting rod (11): fluting portion and two ends thereof are circular-arc, utilize the some contact form to promote blade (12) abduction.

Blade (12): right-hand member is an arcuation, and respectively there are a rake, hypsokinesis inclined-plane and sharp knife edges in front and back, can bore and expand the dual-purpose sequestrum of being convenient to remove, and left end has a through hole, and pin axle (14) passes through hole blade (12) is hinged in sleeve (9) hole.

Carry out femoral head when moving under water decompression operation, at first open a through hole, capital tunnel at femoral head greater trochanter place with trepan, then, the femoral head hilted broadsword front end that bore to expand double purpose device that moves under water is stretched in the hole, tunnel, and under the cooperation of X-ray or other fluoroscopic apparatus, limit rotation hand rotary nut (6), the limit rotates whole apparatus by hand, when blade (12) during in the home position, the boring function is arranged, and visual location of necrosis is carried out selective excision during the excision sequestrum, after sequestrum is removed totally, rotation hand rotary nut (6), apparatus can take out.

The femoral head hilted broadsword moves under water and bore to expand double purpose device when diseases such as treatment ischemic necrosis of femoral head, can bore expand dual-purpose, the selective ablation sequestrum, to the patient damage little, simple operation is practical, is suitable for the orthopaedics clinical application.

Description of drawings

Fig. 1 is a population structure sketch map of the present utility model;

Fig. 2 is that both are the structural representation of one to push-pull screw of the present utility model (10) with promoting connecting rod (11);

Fig. 3 is blind nut of the present utility model (a 1) structure chart;

Fig. 4 is double-screw bolt of the present utility model (a 2) structure chart;

Fig. 5 is nut of the present utility model (a 3) structure chart;

Fig. 6 is hexagon socket cap head screw of the present utility model (a 4) structure chart;

Fig. 7 is upper cover plate of the present utility model (a 5) structure chart;

Fig. 8 is hand rotary nut of the present utility model (a 6) structure chart;

Fig. 9 is handle of the present utility model (a 7) structure chart;

Figure 10 is holding screw of the present utility model (a 8) structure chart;

Figure 11 is sleeve of the present utility model (a 9) structure chart;

Figure 12 is push-pull screw of the present utility model (a 10) structure chart;

Figure 13 is promotion connecting rod of the present utility model (a 11) structure chart;

Figure 14 is blade of the present utility model (a 12) structure chart;

Figure 15 is plug (13) structure chart that seals of the present utility model;

Figure 16 is pin axle of the present utility model (a 14) structure chart;

The specific embodiment

The utility model is described in further detail below in conjunction with accompanying drawing.

The femoral head hilted broadsword moves under water to bore and expands double purpose device, by blind nut (1), double-screw bolt (2), nut (3), hexagon socket cap head screw (4), upper cover plate (5), hand rotary nut (6), handle (7), holding screw (8), sleeve (9), push-pull screw (10), promote connecting rod (11), blade (12), seal plug (13), pin axle (14) is formed, it is characterized in that: hand rotary nut (6) has annular groove and its two ends outer surface that annular knurl is arranged, slot part has scale marker, there is step the upper and lower end face, the center tapped through hole; Sleeve (9) left end has step, and outer surface has scale marker, and central through hole, right-hand member have a fluting and two ends that two pin holes are arranged; Push-pull screw (10) left end has external screw thread and tapped blind hole, and a slotted hole is arranged between external screw thread and polished rod; Promoting connecting rod (11) right-hand member is an oblique step and a fluting; Blade (14) right-hand member is an arcuation, and respectively there are rake, hypsokinesis face and sharp knife edges in front and back, and left end has a through hole.Open a through hole, capital tunnel at femoral head greater trochanter place with trepan, then, the femoral head hilted broadsword front end that bore to expand double purpose device that moves under water is stretched in the hole, tunnel, and under the cooperation of X-ray or other fluoroscopic apparatus, limit rotation hand rotary nut (6), the limit rotates whole apparatus by hand, progressively that sequestrectomy is clean, after sequestrum is removed totally, rotation hand rotary nut (6), apparatus can take out.

Claims (5)

1. the femoral head hilted broadsword moves under water to bore and expands double purpose device, by blind nut (1), double-screw bolt (2), nut (3), hexagon socket cap head screw (4), upper cover plate (5), hand rotary nut (6), handle (7), holding screw (8), sleeve (9), push-pull screw (10), promote connecting rod (11), blade (12), seal plug (13), pin axle (14) is formed, it is characterized in that: hand rotary nut (6) has annular groove and its two ends outer surface that annular knurl is arranged, slot part has scale marker, there is step the upper and lower end face, the center tapped through hole; Sleeve (9) left end has step, and outer surface has scale marker, and central through hole, right-hand member have a fluting and two ends that two pin holes are arranged; Push-pull screw (10) left end has external screw thread and tapped blind hole, and a slotted hole is arranged between external screw thread and polished rod; Promoting connecting rod (11) right-hand member is an oblique step and a fluting; Blade (12) right-hand member is an arcuation, and respectively there are rake, hypsokinesis face and sharp knife edges in front and back, and left end has a through hole.

2. femoral head hilted broadsword according to claim 1 moves under water to bore and expands double purpose device, it is characterized in that, described hand rotary nut (6) center its screw thread of tapped through hole has two kinds of project organizations: a kind of is the single thread structural design, every rotation one scale blade abduction 0.44mm, maximum abduction radius is 19.3mm, when blade during in the home position hand rotary nut (6) triple turn arrive the maximum abduction of blade (12) position, a kind of is 3 head thread structural design forms, every rotation one scale blade abduction 1.6mm, maximum abduction radius is 22mm.

3. femoral head hilted broadsword according to claim 1 moves under water to bore and expands double purpose device, it is characterized in that, described handle (7) has blade (12) orientation signal sign.

4. femoral head hilted broadsword according to claim 1 moves under water to bore and expands double purpose device, it is characterized in that, described push-pull screw (10) external screw thread has two kinds of project organizations: a kind of is the single thread structure, a kind of is 3 head thread structural design forms, this part has two kinds of project organizations to realize the abduction of blade (12): a kind of is that right-hand member has a step and a pin hole, connect and promote connecting rod (11), and promote connecting rod (11) left end one blind hole and an oval through hole are arranged, push-pull screw (10) pin hole and slotted hole are on same centrage, another kind is that both are the version of one, and its polished rod two ends front-back is a flat horizontal surface and tangent with the polished rod face, and right-hand member fluting portion two ends are circular-arc.

5. femoral head hilted broadsword according to claim 1 moves under water to bore and expands double purpose device, it is characterized in that described promotion connecting rod (11) fluting portion and two ends thereof are circular-arc, utilizes the some contact form to promote blade (12) abduction.

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