CN207186723U - Noninvasive limbs draw external fixer - Google Patents

Abstract

The utility model discloses a non-invasive limb traction external fixation device. The fixing device includes a distal sleeve, a proximal sleeve and a connecting rod; the distal sleeve is provided with at least one annular airbag that is fixedly connected with the distal sleeve and can be inflated and deflated; the side wall of the proximal sleeve is inflatable and deflated. The airbag structure; at least two connecting rods are fixedly connected between the distal sleeve and the proximal sleeve. The utility model can realize fracture external fixation and non-invasive fixation without bone needles, avoids needle tract infection and the like, and causes little damage to patients.

Description

Non-invasive limb traction external fixation device

technical field

The utility model relates to a fixation device, in particular to a non-invasive limb traction external fixation device for clinical fracture treatment.

Background technique

At present, external fixation or internal fixation is generally used for clinical treatment of fractures. Anatomical locking plates for internal fixation are widely used at present, which are attached to the broken end of the fracture, and the broken end of the fracture is fixed by bone screws to achieve the effect of compression and locking. The internal fixation anatomical locking plate adapts to different bone anatomical shapes, has a good fit to the bone surface, and has high stability. The fixation effect on the fracture site is also good, and the pressurized locking between the steel plate and the screw improves the fixation effect on the fracture site and is not easy to loosen. However, there is still an unavoidable problem in the treatment with internal fixation locking plates, that is, after the fracture heals, a second operation is required to remove the internal fixation locking plates, causing secondary injury to the patient. External fixation treatment is generally traditional plaster external fixation or classic external fixation bracket. When the plaster is fixed, the bandage is not easy to bind firmly, and it is easy to cause loosening. The plaster is heavy and the comfort of the patient is poor. The most important thing is that the external fixation of the plaster has no traction effect. The external fixation bracket has many uses. It is set outside the skin and muscles of the human body. The fixation pins pass through the external fixation bracket and human muscles to fix the broken end of the fracture. It can play a role in traction and fixation. The fixation pin can be removed without secondary surgery. The advantages of external fixation brackets are: less damage to the blood supply to the bone. Less interference with soft tissue coverage. The effect of fixation on open fractures is better. Pressurization and extension can be adjusted at will. But this kind of external fixator has many defects: first, the fixation needle needs to pass through the soft tissue of the human body, and the wound exists all the time during the retention of the external fixator, which easily causes needle tract infection. Second, the external fixation bracket generally includes two fixing frames fixed on the human body. In order to achieve a stable and lasting fixing effect, the fixing frames are tightly pressed on the human skin, and the continuous compression of the skin and soft tissues will cause poor blood flow. Third, the external fixator is bulky, inconvenient for patients to wear, and poor in comfort.

How to solve the above-mentioned problems in the prior art is still the focus of research by those skilled in the art.

Contents of the invention

The technical problem to be solved by the utility model is to propose a non-invasive limb external fixation device with little pressure on skin and soft tissue, which can play a good traction and fixation effect on fractures.

In order to achieve the above object, the utility model adopts the following technical solutions:

A non-invasive limb traction external fixation device, wherein the fixation device includes a distal sleeve, a proximal sleeve and a connecting rod; the distal sleeve is provided with at least one annular ring that is fixedly connected with the distal sleeve and can be inflated and deflated. Airbag; the side wall of the proximal sleeve is an inflatable and deflated airbag structure; at least two connecting rods are fixedly connected between the distal sleeve and the proximal sleeve.

Preferably, the fixing device further includes at least one connecting plate, and at least two through holes are arranged on the connecting plate.

Wherein preferably, the above-mentioned connecting plate is a connecting plate whose length can be adjusted.

Wherein preferably, the above-mentioned connecting rod is an adjustable length connecting rod.

Preferably, three or four length-adjustable connecting rods are fixedly connected between the distal sleeve and the proximal sleeve.

Preferably, one of the three or four connecting rods is covered with at least two sliding sleeves, and a universal pressure rod is connected to the sliding sleeves.

Preferably, the length-adjustable connecting rod includes a sub-rod and a female rod, the female rod is sheathed outside the sub-rod, and the two are fixed by a screw locking device.

Preferably, the above-mentioned adjustable length connecting rod includes a distal rod fixedly connected with the distal sleeve and a proximal rod fixedly connected with the proximal sleeve; the distal rod and the proximal rod are connected through a helical sleeve, and the helical The sleeve can control the distal rod and the proximal rod to move in opposite directions along the rod axis simultaneously.

Preferably, the distal sleeve is provided with three annular airbags, namely a front airbag, a middle airbag and a rear airbag. The three airbags are arranged at intervals and are fixedly connected to the distal sleeve.

Wherein preferably, the above-mentioned front airbag ring is arranged outside the port of the distal sleeve, and its outer diameter is larger than the outer diameter of the distal sleeve.

Wherein preferably, the above-mentioned middle airbag and rear airbag are both arranged in the distal sleeve, and the outer diameter of both is the same as the inner diameter of the distal sleeve.

The utility model can also include a group of ultra-low frequency alternating high and low pressure air sources communicating with the airbags of the distal sleeve and the proximal sleeve, so that the airbags of the distal sleeve and the proximal sleeve can be alternately inflated and deflated according to a predetermined time and frequency.

The utility model is mainly used for fixing fractures of the limbs of the human body, and the near end in the utility model refers to the near trunk end of the limbs. Distal refers to the far trunk end of the extremity. The distal sleeve and the proximal sleeve in the utility model can be designed to conform to the anatomical shape of the fixed part according to the shape of the fixed part, so as to be comfortable to wear and have a good fixing effect.

The beneficial effects of the utility model are as follows:

(1) The utility model can realize external fixation of fractures without bone needles, non-invasive fixation, avoiding needle tract infection and the like, and causing less injury to the patient.

(2) The distal sleeve of the present utility model is provided with three airbags, and the front airbag ring is located outside the port of the distal sleeve, and its outer diameter is larger than the outer diameter of the distal sleeve. After the airbag is inflated, its action direction is to move toward the patient's distal end Pulling can play the role of pulling. After the middle airbag, the rear airbag and the near-end sleeve airbag are inflated, the direction of action is to pressurize the limbs and play a stable and fixed role. The air bag design of the distal end sleeve and the proximal end sleeve of the utility model can greatly reduce the pressure of external fixation on the patient's skin, and can make the blood supply of the affected part unimpeded. The utility model can also utilize the ultra-low frequency alternating high and low pressure air sources to realize alternate inflation and deflation of multiple airbags. The interval inflation between the middle airbag and the rear airbag can reduce the pressure on the skin. Inflation and deflation of the space between the front airbags can realize the micro-movement effect of the fracture site, and the micro-motion can stimulate the fracture site to accelerate its healing.

(3) The connecting rod of the utility model is an adjustable structure, and the length of the connecting rod can be adjusted according to the fracture site and the fixed position. The connecting plate of the utility model is provided with a through hole, which is used for the top rod to pass through. Another structure of the utility model is that the connecting rod is provided with a universal pressure rod, which has the same effect as the top rod, and can stop the patient's skin and play the role of traction and pressure on the fracture site.

Description of drawings

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

Fig. 2 is the structural representation of embodiment 2 of the present utility model;

Fig. 3 is the structural representation of embodiment 3 of the present utility model;

Fig. 4 is a schematic structural view of Embodiment 4 of the present utility model.

Detailed ways

Example 1

This embodiment is an embodiment of human upper limb fracture fixation.

As shown in Figure 1, Embodiment 1 of the present utility model discloses a non-invasive limb traction and fixation device, which includes a distal sleeve 1, a proximal sleeve 2 and two connecting rods 3;

The distal sleeve 1 is provided with three annular airbags, namely a front airbag 11 , a middle airbag 12 and a rear airbag 13 . The three airbags are arranged at intervals and are fixedly connected to the distal sleeve 1 . The front airbag 11 ring is arranged outside the port of the distal sleeve 1, and its outer diameter is larger than the outer diameter of the distal sleeve 1. Both the middle airbag 12 and the rear airbag 13 are arranged in the distal sleeve 1, and the outer diameter of the two is the same as the inner diameter of the distal sleeve 1. Each airbag is provided with an inflation and deflation port. The distal sleeve 1 is consistent with the anatomical shape of the forearm of the human body, and can be set on the forearm of the human body.

The side wall of the proximal sleeve 2 is an inflatable and deflated air bag structure, which is provided with an inflatable and deflated port; its shape and size can be designed and manufactured to adapt to the anatomical structure of the elbow, and can be more fit with the elbow and arm of the human body, and the fixing effect better. Two connecting rods 3 are fixed between the distal sleeve 1 and the proximal sleeve 2 . The connecting rod 3 is a rigid connecting rod. This embodiment also includes two connecting plates 4 , and two through holes 41 are provided on the connecting plates 4 .

This embodiment also includes a group of ultra-low frequency alternating high and low pressure air sources communicating with the airbags of the distal sleeve and the proximal sleeve, so that the airbags of the distal sleeve and the proximal sleeve can be alternately inflated and deflated according to a predetermined time and frequency. The ultra-low frequency alternating high and low pressure air source is an existing technology. It is generally used for alternately inflating airbags. The interval between inflation and deflation and the number of inflation and deflation can be adjusted by itself. This air source is a commercially available product. Other devices that serve the same purpose can also be used in this case.

When this embodiment is in use, the distal sleeve 1 and the proximal sleeve 2 are sleeved on the fractured arm of the patient first, and the position of the external fixation device is adjusted so that the fracture is located between the distal sleeve 1 and the proximal sleeve 2, and then Inflate the airbags of the distal sleeve 1 and the proximal sleeve 2. The front airbag inflation of the far-end cover 1 can play a traction effect. The middle airbag and the rear airbag can be inflated to pressurize and fix the backbone arm. After the doctor has fixed the far-end cover and the near-end cover, he can utilize the top rod to pass through the connecting plate 4 and stop on the patient's skin, and the traction fracture is reset by pressure. The ultra-low frequency alternating high and low pressure air source can realize the alternate inflation and deflation of each airbag, reducing the pressure on the patient's skin.

Example 2

This embodiment is an embodiment of human upper limb fracture fixation.

As shown in Figure 2, Embodiment 2 of the present invention discloses a non-invasive limb traction external fixation device, which includes a distal sleeve 1, a proximal sleeve 2 and three adjustable connecting rods 3;

The distal sleeve 1 is provided with three annular airbags, namely a front airbag 11 , a middle airbag 12 and a rear airbag 13 . The three airbags are arranged at intervals and are fixedly connected with the distal sleeve 1 . The front airbag 11 ring is located outside the port of the distal sleeve 1, and its outer diameter is greater than the outer diameter of the distal sleeve 1; the middle airbag 12 and the rear airbag 13 are all arranged in the distal sleeve 1, and the outer diameter of the two is the same as the inner diameter of the distal sleeve 1. same. Each airbag is provided with an inflation and deflation port. The distal sleeve 1 is consistent with the anatomical shape of the forearm of the human body, and can be set on the forearm of the human body.

The side wall of the proximal sleeve 2 is an inflatable and deflated air bag structure, which is provided with an inflation and deflation port; the proximal sleeve 2 is consistent with the anatomical shape of the human elbow.

The three connecting rods 3 are fixed between the distal sleeve 1 and the proximal sleeve 2. The fixed positions of the three connecting rods 3 can be determined or evenly arranged according to the fracture site. In this embodiment, they are fixed on the proximal sleeve 1 and the distal sleeve 2. Three o'clock, nine o'clock and twelve o'clock. The connecting rod 3 is a connecting rod whose length can be adjusted, and one of the connecting rods 3 is covered with at least two sliding sleeves 31, and the sliding sleeve 31 is connected with a universal pressure rod 32, which can stop at the fracture The traction and pressurization functions are realized on the arms on both sides. After the position is adjusted, the pressurization rod can be fixed by the fixing element.

In this embodiment, the adjustable length connecting rod 3 includes a distal rod 33 fixedly connected with the distal sleeve and a proximal rod 34 fixedly connected with the proximal sleeve; the distal rod 33 and the proximal rod 34 pass through a helical sleeve 35 connection, the helical sleeve 35 can control the distal rod 33 and the proximal rod 34 to move in opposite directions along the rod axis at the same time, thereby playing the effect of adjusting the length.

In this embodiment, the length of the connecting rod 3 can be adjusted according to the length of the patient's arm, which is more personalized. The design of the sliding sleeve and the pressurizing rod on the connecting rod 3 in this embodiment can realize good traction and pressurizing effects.

Example 3

This embodiment is an embodiment of human upper limb fracture fixation.

As shown in FIG. 3 , in this embodiment, the length-adjustable connecting rod 3 includes a sub-rod 36 and a female rod 37 , the female rod 37 is sheathed outside the sub-rod 36 , and the two are fixed by a screw locking device 38 . Adjust the length of the connecting rod 3 by adjusting the length that the sub-rod 36 stretches out from the female rod 37, and then tighten the screw locking device 38 after adjustment. Other structures of this embodiment are the same as those of Embodiment 2.

Example 4

As shown in Fig. 4, this embodiment is an embodiment of human lower limb fracture fixation.

Embodiment 4 of the present utility model discloses a non-invasive limb traction external fixation device, which includes a distal sleeve 1 , a proximal sleeve 2 and three adjustable connecting rods 3 . In this embodiment, the shape of the distal sleeve 1 is consistent with that of the human foot and ankle. The proximal cover 2 is consistent with the anatomical shape of the human calf and knee. Other structures in this embodiment are the same as in Embodiment 2.

Claims (12)

1. a kind of noninvasive limbs traction external fixer, it is characterised in that including distal end set, near-end set and connecting rod；The distal end Put at least provided with one with distal end set be fixedly connected and can inflation/deflation annular air-pocket；The side wall of the near-end set is can charge and discharge The airbag structure of gas；At least two connecting rods are fixedly connected between the distal end set and near-end set.

2. noninvasive limbs traction external fixer as claimed in claim 1, it is characterised in that also include an at least connecting plate, institute State connecting plate and be provided with least two through holes.

3. noninvasive limbs traction external fixer as claimed in claim 2, it is characterised in that the connecting plate is length adjustable Connecting plate.

4. noninvasive limbs traction external fixer as claimed in claim 3, it is characterised in that the connecting rod is length adjustable Connecting rod.

5. noninvasive limbs traction external fixer as claimed in claim 1, it is characterised in that the distal end set and near-end cover it Between be fixedly connected with three or four length adjustable connecting rods.

6. noninvasive limbs traction external fixer as claimed in claim 5, it is characterised in that described three or four connecting rods In a connecting rod on be arranged with least two slip caps, universal pressure rod is connected with the slip cap.

7. the noninvasive limbs traction external fixer as described in claim 4,5 or 6, it is characterised in that the length adjustable connects Extension bar includes sub bar and female bar, and outside sub bar, the two is fixed female rod set by screw locking device.

8. the noninvasive limbs traction external fixer as described in claim 4,5 or 6, it is characterised in that the length adjustable connects Extension bar is included with distally covering the distal rod being fixedly connected and the proximal stem being fixedly connected with near-end set；The distal rod and proximal stem Connected by a screw-casing, screw-casing can control distal rod and proximal stem axially to do opposite direction along bar simultaneously and move.

9. noninvasive limbs traction external fixer as claimed in claim 1, it is characterised in that the distal end is put provided with three Annular air-pocket, air bag, middle air bag and rear gasbag before being respectively, three air bags are arranged at intervals, and are fixedly connected with distal end set.

10. noninvasive limbs traction external fixer as claimed in claim 9, it is characterised in that the preceding air pocket rings are located at remote Outside the set port of end, its external diameter is more than distal end set external diameter.

11. noninvasive limbs traction external fixer as claimed in claim 10, it is characterised in that the middle air bag and rear gasbag It may be contained within the set of distal end, the two external diameter is identical with distal end set internal diameter.

12. noninvasive limbs traction external fixer as claimed in claim 1, it is characterised in that also including one group of ultralow frequency alternation Height pressurized air source is covered with the distal end and near-end set air bag connect, and distal end set and near-end can be made to cover air bag on schedule and frequency Alternately inflation/deflation.