CN87209708U - Spiral intramedullary nail inserting and poking apparatus - Google Patents
Spiral intramedullary nail inserting and poking apparatus Download PDFInfo
- Publication number
- CN87209708U CN87209708U CN 87209708 CN87209708U CN87209708U CN 87209708 U CN87209708 U CN 87209708U CN 87209708 CN87209708 CN 87209708 CN 87209708 U CN87209708 U CN 87209708U CN 87209708 U CN87209708 U CN 87209708U
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- CN
- China
- Prior art keywords
- drawing out
- intramedullary needle
- out device
- needle injection
- diameter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model discloses a spiral intramedullary nail inserting and poking apparatus used for hammering in and drawing out the intramedullary nail during the operation of the long bone fracture. The spiral intramedullary nail inserting and poking apparatus is composed of a columnar impactor, an extractor and two protective jackets with different shapes. The extractor comprises a bar casing device, a leading screw, a propulsion screw nut, a supporter with tube shape, and an adding force lever. The impactor makes the intramedullary nail hammer in the medullary cavity. The extractor draws out the needle which is hammered in the medullary cavity or the bending needle and the needle of jamming of case. The two protective jackets can protect the end of the bone fracture and the bone of the big, the thick and the bulge part.
Description
The invention belongs to the medical surgery apparatus
When the clinical orthopaedics long bone shaft fracture carries out internal fixation, need squeeze into intramedullary needle, but the intramedullary needle of squeezing into sometimes, because needle selection is meticulous, it is thick to cross or get stuck, need extracts again and squeeze into.Clinical before intramedullary needle injection-drawing out device commonly used has: two kinds of ram type and arc extractors, its shortcoming is: use the hammering withdraw of the needle when pulling out pin, withdrawal force is little, because hammer force shakiness, the injection-drawing out device hook is fractureed, easily make simultaneously the damage of bone and joint surrounding tissue again, the looper in " getting stuck " pin and the pulp cavity is extracted very difficult, often making operation sink into crag-fast predicament.
The objective of the invention is to avoid the generation of above-mentioned situation, improved the defective of old-fashioned intramedullary needle injection-drawing out device, abolished the heavy withdraw of the needle method that bone hammer impacts, improved the operation quality, promptly save time and laborsaving, guaranteed surgical effect.For this reason, designed spiral intramedullary needle injection-drawing out device.
Basic design of the present invention is: spiral intramedullary needle injection-drawing out device is made up of three part-structures, and a driver is arranged, and is cylindric, the about 17～19mm of diameter, and an end has circular hole, and hole depth is 24～26mm, and the diameter in hole is 8～12mm.Have an extractor to comprise leading screw, be cylindric, diameter is at 12～14mm, and length is 150～180mm, and a bolt sleeve device is arranged, and is cylindric, and the internal orifice diameter is 8～12mm, has one to advance screw, is cylindric, and diameter is 34～37mm.Three tubular supports are arranged, be cylindric, diameter has an afterburning moving rod at 20～24mm, is cylindric, and a tuberosity protective sleeve and three bone stump protective sleeves are arranged.
By the above-mentioned spiral intramedullary needle injection-drawing out device that designs, in use, the doctor can hold pin with left hand; aim at the near-end medullary cavity, the right hand is held driver and is entangled backshank, changes left hand and holds driver; the right hand is held the tail end that bone hammer hits driver; make pin enter pulp cavity, cross thick meticulous or inserting needle when broach and get stuck, need extract when changing pin and squeezing into again; the doctor holds the bone stump protective sleeve with the right hand; entangle bone stump, hold the leading screw bolt sleeve device with the right hand immediately, tack pin hole; with the right hand tubular support is inserted in leading screw and bolt sleeve device then; to advance screw to screw in screw mandrel with the right hand, after screwing, rotation in the direction of the clock; pin is promptly extracted; this intramedullary needle injection-drawing out device withdrawal force is strong and steady, saves time; laborsaving, there is not the damage of paying; meet the biomechanics requirement; improve the operation quality, alleviated patient's misery, extracted effect satisfaction.
Be best an enforcement of the present invention below, shown in figure (1), the extractor structure, bolt sleeve device (1), front end at bolt sleeve device is tubular, diameter of bore 8～12mm, middle side part at cylinder has a groove, a bolt sleeve device hook (2) is arranged in the groove, hook intramedullary needle hole is used, hook is fixed on the cylinder with a bearing pin (3), dark side at the hook rear portion has a spring (4) so that hook is upspring, have in the bolt sleeve device rear end diameter be having of 6～10mm externally threaded round bar length be 24～31mm, join with leading screw (5), it is cylindric that leading screw is, and diameter is 12～14mm, and length is 150～130mm, the leading screw front end has female thread, join with bolt sleeve device, the leading screw rear end has a tailstock (6) to be used for the fixing direction of adjusting of hand rest, has one to advance screw (7), the propelling screw is divided in two parts, the rear end outer rim at rear portion has three uniform cylindric spanners (8), can be with the afterburning rotation of afterburning moving rod (9) usefulness on spanner, and advancing screw middle is female thread, with screw mandrel interlock mutually, advancing the screw front end that single thrust bearing (10) is arranged, work the effect of reducing friction, advancing screw the place ahead that one bearing (10) and bearing holder (housing, cover) (11) are arranged.With rigid bearing (10) bearing holder (housing, cover) rear end outer rim three tapped holes are arranged, there are three to have externally threaded fixed screw bar (12) in the hole, bearing holder (housing, cover) is rotatably connected with advancing screw, there is tubular support (13) the leading screw outside, it is cylindric that tubular support is, divide three joints, the long 128～132mm of every joint, drum diameter is 20～24mm.One driver (Fig. 2) is arranged, be cylindric, the hole is to hold backshank; the external length of restriction backshank; prevent that backshank is long too short, two kinds of protective sleeves (Fig. 3) are arranged, fracture end protective sleeve (14) is arranged; protective sleeve one end is periphery seal; middle porose, pin is passed by interstitial hole, and the other end is uncoveredly to contact with bone stump; thick outer thin uncovered shape in being around the fracture end protective sleeve sidewall, it is wide at the top and narrow at the bottom that inner chamber is.Greater trochanter protective sleeve (15) is arranged, and the one end is uncovered, contact with greater trochanter, and the sidewall upper-thin-lower-thick of greater trochanter protective sleeve, its inner chamber is like bowl-shape.
Claims (7)
1, is used for the spiral intramedullary needle injection-drawing out device that intramedullary needle was squeezed into and extracted in the long tubular bone fracture operation, belong to bone surgery set, it is by an extractor (Fig. 1), driver (Fig. 2) and protective sleeve (Fig. 3) are formed, it is characterized in that there is bolt sleeve device (1) in extractor the place ahead, bolt sleeve device tube one middle side part has a groove, and a hook is arranged in the groove, and the dark side of hook has a spring; Advance the rear end outer rim of screw that three uniform garden column spanners are arranged; Advance the screw front end that single thrust bearing is arranged, the bearing outside has bearing holder (housing, cover), bearing holder (housing, cover) rear end that three screwed holes are arranged.
2, intramedullary needle injection-drawing out device as claimed in claim 1 is characterized in that driver the place ahead hole depth is 24～26mm, and the hole interior diameter is 8～12mm.
3, intramedullary needle injection-drawing out device as claimed in claim 1 is characterized in that the bolt sleeve device front end is tubular, and diameter of bore is 8～12mm.
4, intramedullary needle injection-drawing out device as claimed in claim 1, the rear end that it is characterized in that bolt sleeve device are one to have externally threaded cylinder, and diameter is 6～10mm, and length is 29～31mm.
5, intramedullary needle injection-drawing out device as claimed in claim 1 is characterized in that the leading screw diameter is 12～14mm, and length is 150～180mm.
6, intramedullary needle injection-drawing out device as claimed in claim 1 is characterized in that tubular support divides three joints, and every joint diameter is 20～24mm.
7, intramedullary needle injection-drawing out device as claimed in claim 1 is characterized in that an end of protective sleeve is periphery seal, and middle porose, the blind end of protective sleeve sidewall is thick, and opening end is thin, and inner chamber is wide at the top and narrow at the bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87209708 CN87209708U (en) | 1987-06-27 | 1987-06-27 | Spiral intramedullary nail inserting and poking apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87209708 CN87209708U (en) | 1987-06-27 | 1987-06-27 | Spiral intramedullary nail inserting and poking apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN87209708U true CN87209708U (en) | 1988-05-18 |
Family
ID=4824749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87209708 Expired - Lifetime CN87209708U (en) | 1987-06-27 | 1987-06-27 | Spiral intramedullary nail inserting and poking apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN87209708U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109009267A (en) * | 2018-08-29 | 2018-12-18 | 南京新生医疗科技有限公司 | A kind of high-precision hair follicle extraction trepan |
-
1987
- 1987-06-27 CN CN 87209708 patent/CN87209708U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109009267A (en) * | 2018-08-29 | 2018-12-18 | 南京新生医疗科技有限公司 | A kind of high-precision hair follicle extraction trepan |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |