CN209864024U - Reset pliers with sight - Google Patents

Abstract

The utility model discloses a pair of reduction forceps with a sighting device, which comprises a first forceps handle and a second forceps handle, wherein the middle positions of the first forceps handle and the second forceps handle are respectively provided with a shaft hole, a pin shaft penetrates into the shaft holes, and the first forceps handle and the second forceps handle are rotatably and movably connected; wherein: the first clamp handle comprises a front handle body at the front part of the shaft hole and a rear handle body at the rear part of the shaft hole; the second clamp handle comprises a front handle body at the front part of the shaft hole and a rear handle body at the rear part of the shaft hole; the handle head of the front handle body of the first forceps handle is fixed with a threaded support rod, the sighting device is rotatably arranged on the threaded support rod, and a guide through hole is formed in the sighting device. Through the utility model discloses the pincers that reset of taking sight can directly pass through the fixed offside fracture piece of fracture end when the operation, so the pincers position that resets does not influence the operation, need not to adjust the pincers position that resets repeatedly, has saved the operation time greatly.

Description

Reset pliers with sight

technical field

The utility model relates to the field of medical instruments, in particular to a resetting forceps with a collimator.

Background technique

In the acetabular fracture surgery, when the posterior fracture is fixed by anterior reduction, due to the special anatomy, the posterior fracture cannot be fully exposed. It is necessary to insert the reduction forceps into the posterior bone surface, then reduce the anterior and posterior clamps, and then fix the posterior fracture with screws. A plate was placed to fix the anterior bone surface. Because there are important neurovascular and muscle tissues around the incision of the acetabular surgery, and the articular surface cannot enter the screw, the actual operation space is extremely limited, and the reduction forceps often occupy most of the operation space, which generally seriously affects the temporary fixation and driving into the rear fixation The operating channel of the screw, so the front and rear screw fixation is recognized as a difficult point in surgery. Even with the accumulation of rich experience, it is often necessary to repeatedly change the position of the reset forceps or repeat fluoroscopy for a long time, which has become one of the most important factors that prolong the operation time.

For this reason, the utility model provides a reset pliers with a collimator. After the fracture is reset by the clamp, the pin or screw that fixes the rear fracture can be directly driven into the fixation pin or screw through the guide hole on the handle head. If the entry channel is not ideal, it can be adjusted through the rotatable sight on the handle pliers, and the fixing pin or screw is driven through the guide hole on the sight, avoiding the steps of repeatedly adjusting the position of the reset clamp and confirming the passage of the rear fixing screw through perspective. It can significantly save operation time and improve the accuracy of the screw position. At the same time, the curved design of the long handle body avoids tension stimulation of nerves and blood vessels around the bone surface to the greatest extent, and reduces the risk of iatrogenic injury caused by conventional reduction forceps design.

Utility model content

In order to realize the purpose of this utility model, adopt following technical scheme to realize:

A resetting pliers with a collimator, comprising a first pliers handle and a second pliers handle, the first pliers handle and the second pliers handle are each provided with a shaft hole in the middle, and a pin shaft is inserted into the two shaft holes, The first pliers handle and the second pliers handle are rotatably connected, wherein: the first pliers handle includes a front handle body at the front part of the shaft hole and a rear handle body at the rear part of the shaft hole; the second pliers handle includes a front handle body at the front part of the shaft hole The front handle body and the rear handle body at the rear of the shaft hole; a threaded support rod is fixed on the head of the front handle body of the first pliers handle, and the sight is rotatably installed on the thread support rod, and the sight is provided with a guide through hole.

The reset pliers described above, wherein: the front end of the front handle body of the first pliers handle is a handle head, and the handle head is provided with a plurality of handle tips.

The reset pliers, wherein: a through hole is provided on the crown, and a plurality of handle tips surround the through hole.

The reset pliers, wherein: the rear handle body of the first pliers handle is provided with a mounting hole, the rear handle body of the second pliers handle is provided with a strip-shaped through hole, and one end of the locking screw is installed in the mounting hole, and is connected with the The rear handle body of the first pliers handle is hingedly connected, and the locking screw shaft passes through the strip-shaped through hole, and a locking nut threadedly engaged with the locking screw shaft body is provided on the passing-out side.

The reset pliers, wherein: the length of the bar-shaped through hole is greater than the diameter of the locking screw.

The reset pliers, wherein: the aimer includes a mounting base, a slider and a locking screw, one end of the mounting base is provided with a threaded hole, through which the threaded hole is installed on the threaded support rod; the other end of the mounting base is provided along the length direction of the mounting base. There is a chute, the slider is installed in the chute, the outer wall of the chute is provided with a threaded hole, the locking screw is installed in the threaded hole, and the end of the slider away from the mounting seat is provided with a guide through hole.

The reset clamp, wherein: the cross-section of the guiding through hole is elongated.

Said reset pliers, wherein: the front handle body of the first pliers handle has a predetermined arc, and the front handle body of the first pliers handle protrudes in a direction opposite to the front handle body of the second pliers handle.

The reset pliers, wherein: the front handle body of the second pliers handle includes three arc sections as a whole, wherein the first arc section is connected with the rear handle body, and its bending direction is bent with the front handle body of the first pliers handle The direction is opposite, the second arc segment is smoothly connected with the first arc segment, and its bending direction is opposite to the bending direction of the first arc segment, and the third arc segment is smoothly connected with the second arc segment, and its bending direction is opposite to that of the second arc segment. The bending directions of the arc segments are opposite, and the top of the third arc segment is a crown, and the crown includes a handle tip.

The reset pliers, wherein: the length of the first pliers handle is shorter than the length of the second pliers handle.

Description of drawings

Fig. 1 is a structural schematic diagram of a reset clamp with a collimator;

Figure 2 is a schematic diagram of the structure of the aimer.

Detailed ways

As shown in Figure 1, as shown in Figure 1, the reset pliers with aiming device comprises a first pincer handle 1 and a second pincer handle 2, and the length of the first pincer handle 1 is shorter than the length of the second pincer handle 2; The pliers handle 1 and the second pliers handle 2 are each provided with a shaft hole in the middle, and the two shaft holes pass through the pin shaft 17 so that the first pliers handle 1 and the second pliers handle 2 are rotatably connected. The first pliers handle 1 includes a front handle body 5 at the front of the shaft hole and a rear handle body 3 at the rear of the shaft hole. Preferably, a grip ring is provided at the rear of the rear handle body 3; The front handle body 6 at the top and the rear handle body 4 at the rear portion of the shaft hole, preferably, the rear handle body 4 rear portion is provided with a grip ring. The rear handle body 3 is provided with a mounting hole 11, the rear handle body 4 is provided with a strip-shaped through hole 12, one end of the locking screw 13 is installed in the mounting hole 11, and is hingedly connected with the rear handle body 3, and the locking screw rod 13 is Body passes through bar-shaped through hole 12, is provided with the locking nut 14 that is threadedly engaged with locking screw rod 13 shafts at the passing out side, and the length of bar-shaped through hole 12 is greater than the diameter of locking screw rod 13.

The front handle body 5 of the first pincer handle 1 has a certain radian, and the front handle body 5 protrudes toward the direction opposite to the front handle body 6 of the second pincer handle 1. The front end of the front handle body 5 is a handle head 15, and the handle head 15 A plurality of handle tips are provided, and a through hole (not shown in the figure) is provided on the handle head 15, and a plurality of handle tips surround the through hole. The handle 15 is fixed (for example by means of welding) a threaded support rod 7, the threaded support rod 7 is arranged on the side of the front handle body 5 away from the front handle body 6 of the second pincer handle 1, and the sight can be rotated installed on the threaded support rod 7.

As shown in Figure 2, the sight includes a mounting base 8, a slider 9 and a locking screw 10, one end of the mounting base is provided with a threaded hole 19, through which the threaded hole 19 is installed on the threaded support rod 7; the mounting base 8 is at the other end A chute 18 is provided along the length direction of the mounting seat 8, and the slide block 9 is installed in the chute 18. The outer wall of the chute 18 is provided with a threaded hole (not shown in the figure), and the locking screw 10 is installed in the threaded hole. The slider 9 can slide in the chute 18 to adjust its extension length. After the locking screw 10 is tightened, the head of the locking screw 10 presses against the slider 19 to realize the locking and positioning of the slider 19 . An end of the slider 9 away from the mounting seat 8 is provided with a guide through hole 13 , and the cross section of the guide through hole 13 may preferably be elongated.

As shown in Figure 1, the front handle body 6 of the second pliers handle 2 as a whole includes three arc sections, wherein the first arc section is connected with the rear handle body 4, and its bending direction is the same as that of the front handle of the first pliers handle 1. Body 5 has opposite bending direction, the second arc section is smoothly connected with the first arc section, and its bending direction is opposite to the first arc section's bending direction, and the third arc section is smoothly connected with the second arc section, and its bending direction is opposite to that of the first arc section. Opposite to the bending direction of the second arc segment, the top of the third arc segment is the crown 16, and the crown 16 includes a handle tip.

The reset pliers with aimer of the utility model is mainly used in acetabular fracture surgery. When in use, the two handles clamp the front and rear fracture blocks, and then the clamps reset the fracture. When reset, the multiple handle tips of the short handle Can reliably hold the bone surface, tighten the lock nut on the locking screw after reset, and the fracture end will be stabilized. At this time, through the through hole on the short handle head, the fixation pin can be driven into the fracture surface to fix the rear fracture block. If you are satisfied, you can directly replace it with the rear fixing screw through the through hole. If the position of the fluoroscopy fixation pin is not satisfactory, or the number of screws needs to be increased to enhance the stability of the fracture, you can rotate the mount of the sight to a suitable position, tighten the locking screw, and drive the fixation pin through the guide hole on the slide of the sight Or screw, the guide through hole is a long strip hole, so the fixing pin or screw can be adjusted at a certain angle.

The reset forceps with collimator of the utility model is especially used in the surgical treatment of acetabular fractures, because of the multi-pointed design of the handle head, the stability of holding the bone surface during clamping and reset is increased, and at the same time, the short handle handle can be used to The hole or the guide hole on the aimer slider can directly fix the contralateral fracture fragment through the fracture end, so the position of the reset forceps does not affect the operation, and there is no need to repeatedly adjust the position of the reset forceps, which greatly saves the operation time, and at the same time through the guide hole increases The accuracy of the screw insertion channel simplifies the difficulty of surgery and avoids the radiation hazards to patients and doctors caused by repeated fluoroscopy. In addition, due to the curved design of the long handle, it avoids the interference of nerves and blood vessels around the bone surface and reduces iatrogenic damage. risk.

Claims (10)

1. The utility model provides a pincers that reset of area sight, includes first pincers handle and second pincers handle, and first pincers handle and second pincers handle respectively are equipped with a shaft hole in the position at middle part, penetrate the round pin axle in two shaft holes, and first pincers handle and second pincers handle rotatable swing joint, its characterized in that: the first clamp handle comprises a front handle body at the front part of the shaft hole and a rear handle body at the rear part of the shaft hole; the second clamp handle comprises a front handle body at the front part of the shaft hole and a rear handle body at the rear part of the shaft hole; the handle head of the front handle body of the first forceps handle is fixed with a threaded support rod, the sighting device is rotatably arranged on the threaded support rod, and a guide through hole is formed in the sighting device.

2. The reduction forceps of claim 1, wherein: the front end of the front handle body of the first forceps handle is a handle head, and the handle head is provided with a plurality of handle tips.

3. The reduction forceps of claim 2, wherein: the crown is provided with a through hole, and a plurality of crown rings the through hole.

4. The reduction forceps of claim 1, wherein: the rear handle body of the first clamp handle is provided with a mounting hole, the rear handle body of the second clamp handle is provided with a strip-shaped through hole, one end of a locking screw rod is mounted in the mounting hole and is hinged with the rear handle body of the first clamp handle, a rod body of the locking screw rod penetrates through the strip-shaped through hole, and a locking nut in threaded fit with the rod body of the locking screw rod is arranged on the penetrating side.

5. The reduction forceps of claim 4, wherein: the length of the strip-shaped through hole is larger than the diameter of the locking screw.

6. The reduction forceps of claim 1, wherein: the sighting device comprises a mounting seat, a sliding block and a locking screw, wherein one end of the mounting seat is provided with a threaded hole, and the sighting device is mounted on the threaded support rod through the threaded hole; the mount pad other end is equipped with the spout along mount pad length direction, and the slider is installed in this spout, and the spout outer wall is equipped with the screw hole, and locking screw installs in this screw hole, and the one end of keeping away from the mount pad of slider is equipped with the guide through-hole.

7. The reduction forceps of claim 6, wherein: the cross section of the guide through hole is in a long strip shape.

8. The reduction forceps of claim 1, wherein: the front handle body of the first clamp handle is provided with a preset radian, and the front handle body of the first clamp handle protrudes towards the direction opposite to the front handle body of the second clamp handle.

9. The reduction forceps of claim 8, wherein: the whole front handle body of second pincers handle includes three sections segmental arc sections, and wherein first segmental arc links to each other with the back handle body, and its crooked direction is opposite with the crooked direction of the front handle body of first pincers handle, second segmental arc and first segmental arc smooth connection, and its crooked direction is opposite with the crooked direction of first segmental arc, and third segmental arc and second segmental arc smooth connection, and its crooked direction is opposite with the crooked direction of second segmental arc, and third segmental arc top is the crown, and the crown includes a crown.

10. The reduction forceps of claim 1 or 8, wherein: the first jaw arm is shorter in length than the second jaw arm.