阅读说明：本技术 用于空间受限手术的翻转式持针器 (Turnover needle holder for space-limited surgery ) 是由 江琴 于 2019-11-17 设计创作，主要内容包括：本发明公布了一种用于空间受限手术的翻转式持针器,其特征在于包括翻转功能组件和夹持松开功能组件。翻转功能组件的特征在于包括1(小轮组件),2(套管组件),3(大轮组件),8(翻转用绳索),4(固定手柄),5(运动手柄),7(持针组件)。夹持松开功能组件的特征在于包括6(美工刀式调整块),9(持针用绳索),7(持针组件)。本发明可以在外部操控实现内部的翻针动作,而不需要整个持针器的翻转,适合在手术空间狭小不允许持针器做大动作挪移翻转的场合,比如阴式手术中。本发明降低了空间受限手术的缝针的操作难度,可以减少手术时间,提高医生和患者的手术体验,为患者生命健康加了一道保障。(The invention discloses a turnover needle holder for a space-limited surgery, which is characterized by comprising a turnover functional component and a clamping and loosening functional component. The overturning functional component is characterized by comprising a small wheel component 1, a sleeve component 2, a large wheel component 3, a rope for overturning 8, a fixed handle 4, a moving handle 5 and a needle holding component 7. The clamping and loosening functional assembly is characterized by comprising 6 (an art designing knife type adjusting block), 9 (a rope for holding a needle) and 7 (a needle holding assembly). The needle holder can be controlled externally to realize the internal needle turning action without turning the whole needle holder, and is suitable for occasions with narrow operation space and without allowing the needle holder to move and turn in large action, such as a female operation. The invention reduces the operation difficulty of the suture needle of the space-limited operation, can reduce the operation time, improves the operation experience of doctors and patients, and provides a guarantee for the life and health of the patients.)

1. A turnover needle holder for a space-limited operation is characterized by comprising a turnover functional component and a clamping and loosening functional component. The overturning functional component is characterized by comprising a small wheel component 1, a sleeve component 2, a large wheel component 3, a rope for overturning 8, a fixed handle 4, a moving handle 5 and a needle holding component 7. The method is characterized in that: belt transmission is formed by 1 (small wheel component), 3 (large wheel component) and 8 (rope for turning over). Relative movement between 4 (fixed handle) and 5 (moving handle) can drive 3 (large wheel assembly). The 7 (needle holding component) is fixed on the 1 (small wheel component), and the rotation of the 1 (small wheel component) can cause the 7 (needle holding component) to turn over. The clamping and loosening functional assembly is characterized by comprising 6 (an art designing knife type adjusting block), 9 (a rope for holding a needle) and 7 (a needle holding assembly). It is characterized in that the needle holding component 7 comprises a fixed claw 7-1 and a movable claw 7-2 which are connected by a revolute pair, and the revolute pair is added with a torsion spring. 9 (a rope for holding the needle) is connected with the tail end of the movable claw 7-2, and one end is connected with the utility knife type adjusting block 6.

2. The flip-over needle holder for space constrained surgery of claim 1 characterized by 6 (utility knife adjustment block) between 4 (fixed handle) and 5 (moving handle) and near the inside of 4 (fixed handle).

3. The convertible needle holder for limited space surgery of claim 1 wherein 6 (utility knife adjustment block) is a sliding adjustment structure employing a utility knife.

4. The sliding adjustment structure of utility knife according to claim 3, which has automatic locking, manual locking, and rotation locking.

5. The flip-up needle holder for space-constrained surgery according to claim 1, wherein when 9 (a rope for holding the needle) is tightened, tips of 7-1 (a fixed jaw) and 7-2 (a movable jaw) are pressed against each other; when 9 (the cord for holding the needle) is released, the tips of 7-1 (the fixed jaw) and 7-2 (the movable jaw) are separated from each other.

6. The limit of mutual separation according to claim 5 is that the bottom of 7-2 (moveable jaw) presses against the upper surface of 1 (small wheel assembly).

Technical Field

The invention relates to a turnover needle holder for a surgery with limited space, which is particularly suitable for the surgery with narrow operation space, such as a vaginal surgery.

Background

The so-called vaginal operation is an operation using the natural orifice of the vagina.

The cesarean section has less pain than the natural section, so the cesarean section is greatly advocated in recent years.

However, the healing of the incision of the uterus may be uneven due to the position of the incision, the density or tightness of the suture of the incision, infection and the like, and diverticulum, namely a scar diverticulum of the uterus, is formed.

There are studies showing that there is a 100% probability of developing uterine cicatrization diverticula in more than three caesarean section patients.

Patients who have cicatricial diverticulum produced by cesarean section are mainly manifested by abnormal vaginal bleeding, secondary infertility, chronic pelvic pain, menstrual abdominal pain and the like; with abnormal vaginal bleeding being the most prominent symptom.

It not only affects health, but also affects quality of life.

The need for surgery to cicatricial diverticulum of the uterus has grown dramatically year by year, with the vaginal surgery opening the body to a minimum, with several advantages:

the interference to the intestinal tract is minimal, and the occurrence probability of postoperative ileus is much smaller.

The complications caused by abdominal incision such as wound infection, discomfort and the like are avoided, and the patient feels satisfied without scars on the abdomen.

Elderly patients and patients with medical complications are more tolerant of vaginal surgery.

Excessive obesity increases the difficulty of transabdominal surgery, but the difficulty of transvaginal surgery is less.

However, the disadvantage of the vaginal operation is that the operation field is small, and the operation technique requirement of the operator is higher.

The suture method of the existing vaginal operation adopts the same method and apparatus of the open operation, which causes suture difficulty and long time consumption, enhances the working difficulty and strength of medical staff and prolongs the operation time.

The distance from the vaginal orifice to the cervix is about 150mm, the diameter of the vagina is about 50mm after expansion, and the needle is sewed on the uterus through the narrow and long pipeline, so that the overturning action required by the needle is not easy to realize.

Also for transverse wounds, the oscillation is intended to be at an angle to the vaginal axis. Unlike a longitudinal wound, its axis of oscillation is parallel to the vaginal axis. The space limitations for closing a lateral wound are particularly severe.

Most caesarean sections are transverse scars, and the operation for treating the diverticulum of the caesarean section scar is to cut the transverse scar, cut an excessive hard bag and sew the bag, so that the sutured wound is also transverse.

For open needles, the lateral wound is held with the needle holder parallel to the lateral wound and then swung about the lateral axis.

This is not possible for a female surgery.

The existing needle holder has no new design for many years, the structure of the needle holder is similar to an X shape, namely a scissor fork type, and the structure has one defect: for the part with larger depth, the size of the transverse divergence is larger, and therefore, the female surgery has larger limitation, and the improvement is urgently needed. To access a site of greater depth, a longer needle holder is used, and correspondingly, its lateral dimension will be greater.

In addition to occupying a large space, the locking of the existing needle holder is achieved by embedding teeth at two sides of the hand-held end. When a doctor wants to lock and unlock, the doctor needs to apply overturning moment to the rotating pair at the rotating shaft of the needle holder, which has higher requirement on the strength of the rotating pair and also makes the operation of the doctor laborious and easy to cause operation fatigue. The strength requirement is high, the rotating pair is required to be thickened in an accelerated manner, and the size of the rotating pair is large.

Generally, in the needle sewing process, a doctor holds a needle holder by hand to enable a suture needle to penetrate through flesh to expose a needle point, then loosens the needle holder, clamps the exposed needle point and completely extracts the needle. The sewing of each stitch requires at least one loosening and one clamping.

The action of loosening and clamping the needle holder of the existing needle holder needs the thumb to be frequently opened and closed, and the muscle at the thumb is not strong, so that the thumb of a doctor is easy to ache or strain during the operation.

For the operation of treating a diverticulum which is a scar of the uterus in a vaginal operation, the uterus has a very thick muscular layer and the process of needle penetration is particularly laborious. A need exists for a needle holder that is comfortable to hold and operate.

The utility knife is a tool used by people in daily life and can be conveniently and automatically locked. The handle is held by a hand, and the blade can be extended and contracted by slightly pushing the handle back and forth with the thumb. And the force applied to the blade tip does not change the position of the blade. Different art designing knife manufacturers have various self-locking structures for the blades.

There are many ways to lock the utility knife. Such as automatic locking, manual locking, knob locking. There are many ways for automatic locking, and this embodiment only describes an automatic locking way.

The manual locking is to add a moving block beside the adjusting block, control the position of the moving block and determine whether to lock. A face plate with a height and a height connected with the moving block is pressed against the locking teeth. When the position of the moving block moves to the position that the high surface of the moving block is pressed against the locking teeth, the locking teeth are pressed on the locking grooves, and locking is achieved. When the moving block moves to the position that the lower surface of the moving block is pressed against the locking teeth, the locking teeth are not pressed, and are separated from the locking grooves by means of the elasticity of the locking teeth, so that the locking teeth are not locked.

Knob locking is achieved by replacing the top plate of the adjustment block with a knob which provides a locking friction when turned to compress the inner bottom surface of the sliding sheath. When the knob is turned to be loosened, the bottom surface of the knob is separated from the inner surface of the sliding sheath, and no locking effect is achieved.

Disclosure of Invention

The invention does not need the operation doctor to do the swing on the arm, but utilizes the mechanical structure to convert the swing in vivo into the poking in vitro. Meanwhile, the clamping of the needle holder refers to the adjusting block structure of the art knife.

The invention provides a turnover needle holder for a space-limited operation. By using the advantages of easy operation and self-locking of the utility knife, the utility knife is used on an old medical operation needle holder which is not updated for a long time, and provides a choice for doctors and patients.

The utility knife is used as a daily article and is frequently touched by doctors, so the popularization difficulty of the invention in surgical operation is smaller.

The turnover needle holder for the space-limited surgery is divided into two mutually independent functions.

a. And the needle holding part is turned over by adopting a belt pulley mechanism.

b. The clamping and the loosening of the needle holding part are controlled by adopting an art designing knife type adjusting block.

These two functions are described separately below with reference to the drawings.

Turning over a needle holding part: the needle holding assembly 7 is fixed on the small wheel assembly 1, the small wheel assembly 1 and the large wheel assembly 3 are driven by the rope 8 for turning, and the small wheel assembly 1 and the large wheel assembly 3 are fixed on the sleeve assembly 2. 3 (bull wheel subassembly) is last to be fixed with 5 (motion handle), 2 (thimble assembly) is last to be fixed with 4 (fixed handle), two fingers of operation doctor stretch into two handles respectively, the relative motion of two fingers can drive the relative motion of two handles, 5 (motion handle) will be rotatory round the axial lead of 3 (bull wheel subassembly), and drive 3 (bull wheel subassembly) is rotatory, thereby it is rotatory to drive 1 (steamboat subassembly) through 8 (for the upset), just also make 7 (hold the needle subassembly) rotatory round the axle center of 1 (steamboat subassembly). This achieves the eversion of 7 (needle holding assembly), a commonly used action in suture surgery.

The winding method of 8 (rope for turning over) is as follows: the two ends are respectively 1 (small wheel component) and 3 (large wheel component), and the middle part passes through the inner hole of the sleeve component 2.

Clamping and loosening a needle holding part: as shown in fig. 4, the needle holding assembly 7 mainly comprises two parts, namely a fixed claw 7-1 and a movable claw 7-2, the front sections of which are opposite, and the opposite surfaces of which are densely scored, so that the friction force and the drawing force of the held needle are increased. 7-1 (fixed claw) is fixed on 1 (small wheel component) by welding, riveting or screw thread connection, 7-2 (movable claw) is connected with 7-1 (fixed claw) by a revolute pair, and the revolute pair is provided with a torsion spring, when the external force is not applied, the tips of the two claws are spread, and the bottom surface of 7-2 (movable claw) is pressed against the upper surface of 1 (small wheel component), which is the blocking and limiting of spreading, as shown in fig. 5.

7-2 (moveable claw) has a small hole at the end to allow 9 (needle holding cord) to pass through, so that one end of 9 (needle holding cord) hooks 7-2 (moveable claw). When the needle holding rope 9 is pulled tightly, the movable claw 7-2 (movable claw) rotates around the revolute pair to press the tip end of the movable claw 7-1 (fixed claw), so that the suture needle 10 (suture needle) clamped between the movable claw and the fixed claw is pressed.

The route of 9 (needle holding cord) is: one end of the cutter type adjusting block is fixed on a 6 (art designing cutter type adjusting block), transversely penetrates through one diameter of the 2 (sleeve pipe assembly) to reach the other side of the 2 (sleeve pipe assembly), then penetrates through a central shaft inner hole of the 1 (small wheel assembly) along an outer cylindrical bus of the 2 (sleeve pipe assembly), comes out from the other end of the central shaft of the 1 (small wheel assembly), and is finally fixed on a 7-2 (movable claw).

6 (art designing knife type adjusting block) is divided into two parts: 6-1 (adjusting block) moves relatively to 6-2 (sliding sheath). 6-2 (sliding sheath) is fixed on 2 (sleeve component), the base cloth of 6-1 (adjusting block) is provided with a cylindrical bulge, and one tail end of 9 (rope for holding needle) can be sleeved on the cylindrical bulge and fixed, so that the 6-1 (adjusting block) moves to drive the 9 (rope for holding needle) to be tightened and loosened.

The self-locking structure of the utility knife has a plurality of types, and the self-locking structure of one embodiment of the invention is shown in figure 6.

The 6-4 (sliding block) is provided with a groove for placing the 6-3 (spring leaf) so that the position of the spring leaf is approximately fixed. 6-3 (spring leaf) is the spring steel that bends to certain angle, and this angle can change because of the external force effect, and when the external force disappears, resumes this angle again, therefore has certain elasticity. 6-3 (spring leaf), a short bend is made at both ends, and this sharp bend can be used as a locking tooth. And the 6-2 (sliding sheath) is provided with a locking groove, and under the normal condition, the locking teeth at the two ends of the 6-3 (spring piece) are embedded into the locking groove of the 6-2 (sliding sheath) to play a locking role. The locking tooth is easy to leave the locking groove by the outward poking force, and the locking groove is pressed more tightly by the inward poking force.

The bottom of the 6-1 (adjusting block) is provided with a wedge-shaped block which is arranged between two locking teeth of the 6-3 (spring leaf). As shown in FIG. 4, when 6-1 (the adjustment block) is moved upward, the upper locking teeth of 6-3 (the spring plate) are pressed down outward against the grooves of 6-4 (the slide block), thereby disengaging the locking grooves. The 6-1 (adjusting block) is continuously pushed upwards, the upward direction is not blocked, the lower locking teeth are still in the grooves, but no blocking force is provided, the smooth pushing can be realized, and meanwhile, the lower locking teeth can make clicking sounds when being switched among the grooves along the road, so that the warning of whether the human teeth are in the grooves is realized. 6-1 (adjusting block) to drive the whole mechanism to move, thereby realizing the opening of the needle holder. When pushing 6-1 (the adjusting block) downwards, the principle is similar, and the clamping of the needle holder is realized. When the pushing of the 6-1 (adjusting block) is stopped, the tail end of the needle holder is transferred to the 6-3 (spring piece) by an inward toggle force no matter how much force is applied, so that the locking teeth are pressed to the locking groove more tightly, and the self-locking function is realized.

The surgeon can use the thumb to move 6-1 (the adjustment block), in the embodiment of fig. 4, the upward movement is to tighten 9 (the needle holding cord), and after going up to a certain position, the thumb can realize self-locking without keeping the force, and at this time 10 (the suture needle) is firmly clamped, and the tips of 7-1 (the fixed jaw) and 7-2 (the movable jaw) have a little elastic deformation to maintain the clamping force on 10 (the suture needle) by means of the tension of 9 (the needle holding cord). When moving downwards, 9 (the rope for holding the needle) is loosened, and the elasticity of the torsion spring on the revolute pair between 7-1 (the fixed claw) and 7-2 (the movable claw) enables the two claws to be spread and the sewing needle is loosened 10.

The operation mode is as follows: the surgeon places his thumb in 4 (fixed handle) and his middle finger in 5 (moving handle). 6 (a utility knife type adjusting block) is fixed on the inner side of the 4 (a fixed handle). The thumb can be put on the 6 (art designing knife type adjusting block) after passing through the 4 (fixed handle). The thumb and the middle finger are tightened or spread to turn over the 10 (suture needle), and the thumb slides up and down 6 (art knife type adjusting block) to loosen or clamp the 10 (suture needle).

Drawings

Fig. 1 is an overall structural view of one embodiment of the present invention.

Fig. 2 is a front view of one embodiment of the present invention.

Fig. 3 shows the way in which the display 8 (turning cord) and 9 (needle holding cord) of the hidden 2 (cannula assembly) are routed.

Fig. 4 shows a clamped state of the needle holding portion.

FIG. 5 shows the needle-holding portion in the spread state.

Fig. 6 is a self-locking structure of art designing knife type.

The device comprises a small wheel assembly 1, a sleeve assembly 2, a big wheel assembly 3, a fixed handle 4, a moving handle 5, an art knife type adjusting block 6, a needle holding assembly 7, a rope for overturning 8, a rope for holding the needle 9 and a suture needle 10.

6-1 is an adjusting block, 6-2 is a sliding sheath, 6-3 is a spring piece, and 6-4 is a sliding block.

7-1 is a fixed claw, and 7-2 is a movable claw.

Detailed Description

The invention provides a turnover needle holder for a space-limited operation, and one embodiment is explained below.

2 (the sleeve component) can be a hollow round pipe or a hollow square pipe, the outer diameter or the side length is 20-30mm, the inner diameter or the inner length is 15-18mm, and the length is 260 mm.

The outer diameter of 1 (small wheel component) is 26mm, and the outer diameter of 2 (large wheel component) is 50 mm. 1 (small wheel assembly) is lengthened on one surface and is used for installing 7 (needle holding assembly). The distance between 7 (needle holding component) and the central axis of 1 (small wheel component) is the turning radius, which can be modified according to the objective requirement of the operating doctor, and the empirical value can be selected from 30 mm.

8 (turning rope) is made of stainless steel band or nylon with large friction and the diameter is 2 mm.

The needle holding rope 9 may be a strong stainless steel wire rope, and both ends may be fixed to the designed connecting members by knotting or screwing.

7 (needle holding component), the length and the shape of the tips of the two claws and the depth of the groove mark can be referred to the existing common needle holder.

The sliding length of 6 (art designing knife type adjusting block) is 10mm, and it is fixed on the inner side of 4 (fixed handle). The thumb can be put on the 6 (art designing knife type adjusting block) after passing through the 4 (fixed handle).

The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.