Novel three-jaw medical retractor for inguinal hernia tension-free repair

Abstract

The utility model relates to a novel three-jaw medical drag hook for inguinal hernia tension-free repair, a main body is a U-shaped tension component, the left end and the right end of the tension component are respectively connected with a left hook sheet and a right hook sheet through distraction bodies, and the tension component enables the left hook sheet and the right hook sheet to be opened towards two sides through tension; a center hook piece is further arranged between the left hook piece and the right hook piece and connected with a toothed bar extending backwards. A guide hole is formed in the middle of the tension component; the toothed bar is arranged in the guide hole and can move back and forth in the guide hole; the tension component is further provided with a locking structure, and the locking structure can fix the center hook piece. The utility model has the following beneficial effects: 1, the intraoperative visual field can be expanded, and better operation conditions and better operation flexibility are provided for doctors, so that the intraoperative incision is improved, and the infection probability of the wound is reduced; and 2, the requirements of surgical personnel can be reduced, the retractor can be realized by one person, and the requirement on the adaptability of the surgical personnel can also be reduced.

Description

Technical Field

[0001] The utility model relates to the field of medical instruments, in particular to a novel three-claw medical retractor used for tension-free repair of inguinal hernia. Background Art

[0002] At present, medical retractors are one of the commonly used medical devices in surgical operations. However, during the operation, the size of the surgical wound, the patient's body shape and the elastic retraction of the muscles can easily cause unclear display of the surgical field, which can easily lead to errors in surgical operation, nerve injury, skin cutting, and trouble for the patient, affecting the quality of the operation, causing pain to the patient, inconvenience in the surgical operation, and increasing the infection rate of the wound. To solve the above problems, medical staff often need larger surgical retractors or enlarged incisions, which not only causes unnecessary trauma, but also requires multiple medical staff to pull multiple retractors, which is cumbersome to operate and wastes manpower and material resources.

[0003] Chinese patent CN201120329786 provides a new three-claw medical retractor for tension-free repair of inguinal hernia, which has a tension component and two claws. The tension component causes the two claws to open to both sides through tension, thereby forming a surgical operation space between the two claws. It uses two claws to fix the patient's wound, and requires two doctors to operate at the same time. It is laborious and cannot fix the exposed surgical field for a long time, which increases the time of the operation. This method requires a relatively high degree of cooperation between the two doctors, has a high risk of surgery, poor flexibility, and a limited scope of use.

[0004] In summary, the problems that the existing technology needs to solve are: 1. Unclear intraoperative field of vision; 2. Large intraoperative incision and high probability of incision infection; 3. Many intraoperative personnel are required; 4. Too high a degree of cooperation is required from intraoperative personnel; 5. Poor intraoperative flexibility. Utility Model Content

[0005] The utility model aims to provide a novel three-claw medical retractor for tension-free repair of inguinal hernia, which can solve the problems existing in conventional tension-free hernia repair.

[0006] The utility model is realized by the following technical scheme: a novel three-claw medical retractor for tension-free repair of inguinal hernia, the main body of which is a U-shaped tension component, the left and right ends of which are respectively connected to a left hook piece and a right hook piece through a spreading body, and the tension component causes the left hook piece and the right hook piece to open to both sides through tension;

[0007] A central hook piece is also provided between the left hook piece and the right hook piece, and the central hook piece is also connected to a gear rod extending backwards;

[0008] A guide hole is provided in the middle of the tension member, and the gear rod is arranged in the guide hole and can move forward and backward in the guide hole;

[0009] The tension component is also provided with a locking structure, which can fix the central hook piece.

[0010] Compared with the previous technology, the beneficial effects of the utility model are:

[0011] 1. It can expand the intraoperative field of view, provide doctors with better surgical conditions and better surgical flexibility, thereby improving intraoperative incisions and reducing the probability of wound infection.

[0012] 2. It can reduce the demand for surgical personnel. The retractor can be realized by one person, and the requirement for the cooperation of the surgical personnel can also be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 A side view of the tension component without the left and right hooks and the center hook installed;

[0015] Figure 3 is a schematic diagram of the connection structure between the tension member and the connecting rod;

[0016] Figure 4 It is a top view after the tension member and the connecting rod are connected;

[0017] Figure 5 It is a schematic diagram of the side structure of the left hook piece or the right hook piece;

[0018] Figure 6 Schematic diagram of the chamfer structure on the gear rod;

[0019] Figure 7 Schematic diagram of the structure of the center hook.

[0020] Explanation of reference numerals: 1 tension member, 11 expansion body, 12 L-shaped connector, 13 guide channel, 14 screw, 2 left hook piece, 3 right hook piece, 4 center hook piece, 5 tooth rod, 51 convex rib, 52 limiting groove, 53 chamfer, 6 pull key, 7 torsion spring, 8 toothed structure, 81 protrusion, 82 groove. DETAILED DESCRIPTION

[0021] The utility model is described in detail below in conjunction with the accompanying drawings, but the protection content of the utility model is not limited to the following:

[0022] like Figures 1 to 7 As shown, a novel three-claw medical retractor for tension-free repair of inguinal hernia, the main body of which is a U-shaped tension component 1, the left and right ends of the tension component 1 are respectively connected to a left hook piece 2 and a right hook piece 3 through a spreading body 11, and the tension component 1 causes the left hook piece 2 and the right hook piece 3 to open to both sides through tension;

[0023] A central hook piece 4 is further provided between the left hook piece 2 and the right hook piece 3, and the central hook piece 4 is further connected to a toothed rod 5 extending backwards;

[0024] A guide hole is provided in the middle of the tension member 1, and the gear rod 5 is arranged in the guide hole and can move forward and backward in the guide hole;

[0025] The tension component 1 is also provided with a locking structure, which can fix the central hook piece 4. Under this design, the U-shaped structure can improve the elasticity of the tension component 1, so that the tension component 1 has a better expansion effect. The tension component 1 is used to control the clamping performance of the left hook piece 2 and the right hook piece 3, so that the utility model has a better clamping effect and improves the safety and stability of the operation.

[0026] The utility model is based on the original medical retractor design, and a central hook piece 4 is added. When in use, the left hook piece 2 and the right hook piece 3 open the human tissue to form a surgical operation space, and then the central hook piece 4 is used to pull the human tissue backwards to further expand the surgical field of view.

[0027] The locking structure includes a guide channel 13 and a pull key 6, and the guide hole is connected to the guide channel 13;

[0028] The pull key 6 is arranged on the side of the guide channel 13 and is hinged to the guide channel 13. A torsion spring 7 is also arranged at the hinge between the pull key 6 and the guide channel 13.

[0029] The torsion spring 7 provides a restoring force for the pull key 6 so that the pull key 6 engages with the toothed rod 5 to fix the toothed rod 5. This locking structure design is very convenient to use. The toothed rod 5 can be released and the position of the toothed rod 5 can be adjusted by pressing the pull key 6. The center hook piece 4 can be controlled by adjusting the position of the toothed rod 5. After the center hook piece 4 is adjusted to a suitable position, the pull key 6 is released. The restoring force provided by the torsion spring 7 can engage the pull key 6 with the toothed rod 5, thereby fixing the toothed rod 5.

[0030] The pull key 6 and the guide channel 13 are hinged by a screw 14. The screw 12 here can also be replaced by a pin or other hinged parts.

[0031] The gear rod 5 is provided with a plurality of convex ribs 51 arranged regularly along the extension direction of the gear rod 5 , and a limiting groove 52 is formed between each convex rib 51 , and the pull key 6 is engaged with the limiting groove 52 to fix the gear rod 5 ;

[0032] The convex rib 51 extends upward and downward, and the top corners of the convex rib 51 on both sides are chamfered 53. The convex rib 51 and the limit groove 52 can firmly fix the pull key 6. The chamfer 53 design can remove burrs and prevent the gear rod 5 from being damaged when it is telescopically extended forward and backward in the telescopic channel 11.

[0033] The two ends of the expansion body 11 are respectively connected with a connecting piece 12, and the expansion body 11 is connected to the left hook piece 2 and the right hook piece 3 through the connecting piece 12;

[0034] The left hook piece 2 and the right hook piece 3 are bent downwards towards each other to form an L-shaped groove piece; and the left hook piece 2 and the right hook piece 3 are provided with a joint 15 connected to the connecting piece 12.

[0035] The central hook piece 4 is an L-shaped groove piece bent downward, and the rear end of the central hook piece 4 is connected to the gear rod 5 .

[0036] The design of the L-shaped connecting piece 12 can improve the elastic performance of the tension component, thereby improving the stability and safety of the utility model when fixing human tissue.

[0037] The left hook piece 2 and the right hook piece 3 are both provided with a tooth-like structure 8;

[0038] The tooth-like structure 8 is a plurality of protrusions 81 provided at the ends of the left hook piece 2 and the right hook piece 3. The protrusions 81 are semicircular, and grooves 82 are formed between any adjacent protrusions 81. The design of the tooth-like structure 8 has greater friction than that of an ordinary smooth surface, and can better maintain the open state of human tissue and maintain the field of vision during surgery. Moreover, the design of the semicircular protrusions 81 can reduce the damage to the abdominal wall tissue during surgery, thereby improving the safety performance of the invention.

[0039] The surfaces of the left hook piece 2, the right hook piece 3 and the center hook piece 4 are all polished smooth surfaces. Because the left hook piece 2, the right hook piece 3 and the center hook piece 4 will directly contact the human tissue caused during the operation, it is necessary to ensure that the left hook piece 2, the right hook piece 3 and the center hook piece 4 are smooth. Polishing can remove burrs and reduce their sharpness, which can avoid unnecessary damage to human tissue during the operation.

[0040] Although the utility model uses specific embodiments and their alternatives to illustrate and describe the utility model, it should be understood that various changes and modifications can be implemented as long as they do not deviate from the spirit and scope of the utility model. Therefore, it should be understood that except for the limitations of the attached claims and their equivalents, the utility model is not limited in any sense.

Claims

1. A novel three-claw medical retractor for tension-free repair of inguinal hernia, wherein the main body is a U-shaped tension component (1), the left end and the right end of the tension component (1) are respectively connected to a left hook piece (2) and a right hook piece (3) through a spreading body (11), and the tension component (1) causes the left hook piece (2) and the right hook piece (3) to open to both sides through tension; Features: A central hook piece (4) is also provided between the left hook piece (2) and the right hook piece (3), and the central hook piece (4) is also connected to a toothed rod (5) extending backwards; A guide hole is provided in the middle of the tension component (1), and the gear rod (5) is arranged in the guide hole and can move forward and backward in the guide hole; The tension component (1) is also provided with a locking structure, which can fix the central hook piece (4).

2. The novel three-claw medical retractor for tension-free repair of inguinal hernia according to claim 1, characterized in that: The locking structure comprises a guide channel (13) and a pull key (6), and the guide hole is in communication with the guide channel (13); The pull key (6) is arranged on the side of the guide channel (13) and is hinged to the guide channel (13); a torsion spring (7) is also arranged at the hinge between the pull key (6) and the guide channel (13); The torsion spring (7) provides a restoring force for the pull key (6) so that the pull key (6) engages with the gear rod (5) to fix the gear rod (5).

3. The novel three-claw medical retractor for tension-free repair of inguinal hernia according to claim 2, characterized in that: The pull key (6) and the guide channel (13) are hingedly connected via a screw (14).

4. The novel three-claw medical retractor for tension-free repair of inguinal hernia according to claim 2, characterized in that: The toothed rod (5) is provided with a plurality of convex ribs (51) arranged regularly along the extension direction of the toothed rod (5), and a limiting groove (52) is formed between each convex rib (51), and the pull key (6) is engaged with the limiting groove (52) to fix the toothed rod (5); The convex rib (51) extends in an upward and downward direction, and the top corners on the upper and lower sides of the convex rib (51) are chamfered (53).

5. The novel three-claw medical retractor for tension-free repair of inguinal hernia according to claim 1, characterized in that: The two ends of the expansion body (11) are respectively connected to a connecting piece (12), and the expansion body (11) is connected to the left hook piece (2) and the right hook piece (3) through the connecting piece (12); The left hook piece (2) and the right hook piece (3) are bent downwards towards each other to form an L-shaped groove piece; and the left hook piece (2) and the right hook piece (3) are provided with a joint (15) connected to the connecting piece (12).

6. The novel three-claw medical retractor for tension-free repair of inguinal hernia according to claim 1, characterized in that: The central hook piece (4) is an L-shaped groove piece bent downward, and the rear end of the central hook piece (4) is connected to the gear rod (5).

7. The novel three-claw medical retractor for tension-free repair of inguinal hernia according to claim 1, characterized in that: The left hook piece (2) and the right hook piece (3) are both provided with tooth-like structures (8); The tooth-like structure (8) is a plurality of protrusions (81) provided at the ends of the left hook piece (2) and the right hook piece (3); the protrusions (81) are semicircular, and grooves (82) are formed between any adjacent protrusions (81).

8. The novel three-claw medical retractor for tension-free repair of inguinal hernia according to claim 1, characterized in that: The surfaces of the left hook piece (2), the right hook piece (3) and the central hook piece (4) are all smooth surfaces that have been polished.

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