CN203379205U

CN203379205U - Slotted steel needle

Info

Publication number: CN203379205U
Application number: CN201320314875.XU
Authority: CN
Inventors: 李云峰
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-05-31
Filing date: 2013-05-31
Publication date: 2014-01-08
Anticipated expiration: 2023-05-31

Abstract

The utility model relates to the technical field of orthopedic medical equipment, in particular to a slotted steel needle for treatment of patellar fracture. The slotted steel needle comprises a needle bar and a tip on the head of the needle bar. The tip is in a self-tapping screw tip design. The needle bar is provided with an elongated hole and a limit part having a thread hole. The limit part is close to the tail of the needle bar and locates at the 1/4 part of the needle bar, and the transverse size of the limit part is larger than the diameter of the needle bar. The elongated hole is formed between the tip and the limit part. The slotted steel needle is simple in structure and reasonable in design; the needle is provided with the thread hole and the elongated hole, the proximal end of a puncture guide needle is passed through the thread hole, and the distal end of the puncture guide needle is passed through the elongated hole; the slotted steel needle is simple to operate and firmly fixable; pain caused by loosening, retreating, shifting and skin puncture of the needle or pain in bursitis caused by the use of the needle can be prevented, the patient can feel less pain, and patellar healing is quickened.

Description

Band eyelet slot type draw point

Technical field

This utility model relates to the orthopedic medical device technical field, especially a kind of draw point that is used for the treatment of Patella fracture.

Background technology

Patella is sesamoid bone maximum in the whole body skeleton, can play and protect knee joint, strengthen the coaster effect of last 10～15 ° of quadriceps strength and straighten knee joint.Patella fracture is common intra-articular fracture, and incidence rate accounts for 1.65% of whole body fracture and injury.

The method for the treatment of clinically Patella fracture can be divided into conservative and the large class of operative treatment two.To the Patella fracture without displacement, usually with Gypsum Fibrosum or brace, fix.Operation is the major way for the treatment of Patella fracture, and many interior fixing the reaching in operation method for the treatment of at present Patella fracture still has deficiency, and its main cause is: fixing unreliable in (1) traditional draw point, do not meet the biomechanics requirement; (2) the outer set time is long and cause knee joint disorders; (3) open surgery, wound is large, and interior fixing traditional draw point thing quantity is many, and volume is excessive, destroys patella blood fortune, causes fracture delayed union or disunion; (4) traditional steel needle rotary, loosening dashing forward in subcutaneous, cause bursitis, causes local twinge, even pokes the complication such as skin, to the patient, cause suffering, and unfavorable functional rehabilitation.

The utility model content

The technical problems to be solved in the utility model is: overcome the deficiency in prior art, provide a kind of and can overcome traditional draw point loosening withdraw of the needle, displacement, prick skin or cause the draw point that bursitis causes pain.

This utility model solves the technical scheme that its technical problem adopts: a kind of band eyelet slot type draw point, and comprise shank and be arranged on the needle point of shank head, described needle point is the design of self tapping ailhead, described shank is provided with the limiting section of through wires hole and slotted hole; Described limiting section is near the shank afterbody and be positioned at 1/4th places of shank, and the lateral dimension of limiting section is greater than the diameter of shank; Described slotted hole is positioned at the centre of needle point and limiting section.

Further, in order to make blood flow unimpeded, accelerate the healing of fracture, described slotted hole two ends are provided with tangent plane, and the number of degrees of the inclination angle A of tangent plane are 30 °～70 °.

Further, the hole that described through wires hole is circle, rhombus, rectangle or other shapes.

The beneficial effects of the utility model are: this utility model is simple in structure, reasonable in design, be provided with through wires hole and slotted hole, penetrate through wires hole by puncture guide pin near-end, far-end penetrates slotted hole, simple to operate, fixing strong, can prevent that draw point from becoming flexible the withdraw of the needle, displacement, prick skin or causing bursitis and cause pain, alleviate the patient suffering, accelerate the healing of patella.

The accompanying drawing explanation

Below in conjunction with drawings and embodiments, this utility model is further illustrated.

Fig. 1 is structural representation of the present utility model.

Fig. 2 is the cutaway view of A-A in Fig. 1.

1. shanks in figure, 2. needle point, 3. limiting section, 4. slotted hole, 5. through wires hole, 4-1. tangent plane.

The specific embodiment

By reference to the accompanying drawings this utility model is further described now.The schematic diagram that these accompanying drawings are simplification only illustrates basic structure of the present utility model in a schematic way, so it only shows the formation relevant with this utility model.

Band eyelet slot type draw point as depicted in figs. 1 and 2, comprise shank 1 and the needle point 2 that is arranged on shank 1 head, and needle point 2 is the design of self tapping ailhead, and described shank 1 is provided with the limiting section 3 of through wires hole 5 and slotted hole 4; Limiting section 3 is near shank 1 afterbody and be positioned at 1/4th places of shank, and the lateral dimension of limiting section 3 is greater than the diameter of shank 1; Slotted hole 4 is positioned at the centre of needle point 2 and limiting section 3; Through wires hole 5 is circular.

In order to make blood flow unimpeded, accelerate the healing of fracture, slotted hole 4 two ends are provided with tangent plane 4-1, and the number of degrees of the inclination angle A of tangent plane 4-1 are 60 °.

Use is with the modus operandi of eyelet slot type draw point: (1), adopt hard waist combined anesthesia, the patient gets dorsal position, and two lower limb stretch, routine disinfection drape, sterile working; (2), drive blood and use tourniquet inflated; (3), with the descending knee joint puncture outside patella of " 9 " number syringe, extract hematocele normal saline flushing, then go the Patella fracture manual reduction, patient's both hands thumb is pushed the patella far-end upward, and simultaneously the both hands forefinger is upwards passed the skin of facies anterior patellae as far as possible, then will fracture far-end and near-end involutory, activity knee joint gently, make articular surface recover smooth, and confirm through C arm x-ray fluoroscopy, temporarily fixing with point-like reduction forceps or towel forceps; (4), select on kneecap bottom water plane before and after on 1/2 bisector in 1/3 and outer in 1/3 locate up and down as the patella point of puncture, make respectively 4 longitudinal incisions of 0.5cm skin; (5), the 20-30 degree of going down on one's knees, gently carry forward patella, penetrate two pieces of band eyelet slot type draw points with the direct motion of electric drill percutaneous is parallel, diameter 0.8mm wirerope is penetrated to Kirschner wire head end hole and distal channel according to hollow guide pin through the subcutaneous figure of eight, tighten up wirerope locking, cut off the outer part of slot type Kirschner wire far-end skin, skin suture otch, dressing wrapping.

Above-mentioned embodiment is only explanation technical conceive of the present utility model and characteristics; its purpose is to allow the person skilled in the art can understand content of the present utility model and be implemented; can not limit protection domain of the present utility model with this; all equivalences of doing according to this utility model spirit change or modify, and all should be encompassed in protection domain of the present utility model.

Claims

1. be with eyelet slot type draw point for one kind, comprise shank (1) and be arranged on the needle point (2) of shank (1) head, described needle point (2) is the design of self tapping ailhead, and it is characterized in that: described shank (1) is provided with the limiting section (3) of through wires hole (5) and slotted hole (4); Described limiting section (3) is near shank (1) afterbody and be positioned at 1/4th places of shank, and the lateral dimension of limiting section (3) is greater than the diameter of shank (1); Described slotted hole (4) is positioned at the centre of needle point (2) and limiting section (3).

2. band eyelet slot type draw point according to claim 1, it is characterized in that: described slotted hole (4) two ends are provided with the tangent plane (4-1) that can make blood flow unimpeded, and the number of degrees of the inclination angle A of described tangent plane (4-1) are 30 °～70 °.

3. band eyelet slot type draw point according to claim 1 is characterized in that: described through wires hole (5) is circular, rhombus or rectangular hole.