CN215739163U - Knee joint operation does not have drag hook and system of sheltering from - Google Patents

Abstract

The utility model discloses a non-shielding drag hook for knee joint surgery, which is characterized by comprising a hook body, a bending part and a handle part, wherein the bending part is connected with the hook body and the handle part, the flattening length of the bending part accounts for 7% -8% or 9% -10% of the integral flattening length of the drag hook, the intersection angle of extension lines of the handle part and the hook body is 25-35 degrees, and the upper part of the handle part of the drag hook is provided with a traction piece connecting part. The handle part of the drag hook is fully close to the side of the knee joint, so that observation and instrument operation in the operation are not blocked and obstructed, and under the premise of ensuring that the operative field is fully exposed, the damage to important tissue structures such as the collateral ligament of the knee joint is avoided. The connecting parts of the traction pieces with symmetrical two sides can be matched with the traction pieces to be quickly clamped and annularly fixed at the upper end of the crus, so that the number of assistant persons is reduced, and the operation of an operator is facilitated.

Description

Knee joint operation does not have drag hook and system of sheltering from

Technical Field

The utility model relates to the field of medical instruments, in particular to a non-shielding drag hook for knee joint surgery.

Background

The existing knee joint operation drag hook is easy to block the sight of an operator and influence the operation because the bending degree of the bending part is gentle and the existing knee joint operation drag hook is usually held by an assistant when in use. If the assistant pulls the hook to both sides with force to avoid the shielding of the surgical field, the collateral ligament or the bone can be easily damaged.

The length of current drag hook kink is fixed and only a selection, when running into the patient of size fat and thin difference and pulling open inside and outside soft tissue, often can not the all-round adaptation various condition, influences the operation or shelters from the operation field of vision. Moreover, the hook head of the existing drag hook has different shapes, and is difficult to operate, unstable or easy to damage tissues.

Disclosure of Invention

The utility model aims to provide a non-shielding drag hook for knee joint surgery, wherein a handle part of the drag hook is fully close to the side of a knee joint, so that observation and instrument operation in the surgery are not shielded or blocked, and important tissue structures such as collateral ligaments on the side of the knee joint are prevented from being damaged on the premise of ensuring that the surgery field is fully exposed. The grooves with symmetrical two sides can be matched with the traction piece to be quickly clamped and annularly fixed at the upper end of the shank, so that the number of assistant persons is reduced, and the operation of an operator is facilitated.

The utility model provides a knee joint surgery shelterless retractor, which is characterized by comprising a retractor body, a bending part and a handle part, wherein the bending part is connected with the retractor body and the handle part, the flattening length of the bending part accounts for 7% -8% or 9% -10% of the overall flattening length of the retractor, the intersection angle of extension lines of the handle part and the retractor body is 25-35 degrees, and a traction part connecting part is arranged at the upper part of the handle part of the retractor.

The above-described knee joint operation non-shielding retractor, wherein the hook head portion of the hook body is configured in a curved shape with respect to the hook body.

The knee joint operation does not have the drag hook that shelters from above, wherein, the hook head portion of hook body is tapered structure.

The knee joint operation does not have the shielding drag hook, wherein, the bending part is the arc structure.

The knee joint operation does not have the drawing hook that shelters from above, wherein, the recess of drawing a connecting portion for setting up the bilateral symmetry at handle portion respectively.

The knee joint operation does not have the drawing hook that shelters from above, wherein, the recess is any one of T shape, L shape or J-shaped.

The knee joint operation do not have the drag hook that shelters from above, wherein, drag hook limit portion and hook head portion pointed end are fillet transition.

The utility model provides a knee joint operation non-shielding retractor system, which comprises the knee joint operation non-shielding retractor of any one of the first aspects, and further comprises a traction piece, wherein the traction piece is matched and sleeved with a traction piece connecting part of the knee joint operation non-shielding retractor.

The knee joint operation does not have the shielding drag hook, wherein, the traction piece is an elastic band or a bandage.

Advantageous effects

(1) Compared with the existing drag hook, the bending degree of the bending part of the drag hook (the angle degree of the intersection of the extension lines of the handle part of the drag hook and the hook body) is obviously increased, so that the handle part of the drag hook can be fully close to the side of the knee joint, and the observation and the instrument operation in the operation are not blocked or hindered. Can avoid the surgery assistant from pulling the draw hook to both sides in order to expose the surgery field, which can cause damage to the important tissue structures such as knee joint collateral ligament or bone.

(2) The length of the bending part of the drag hook is divided into two types, namely a long type and a short type, wherein the former is generally used for pulling the patella and the outer soft tissue or the obese patient, and the latter is generally used for pulling the inner soft tissue or the thinner patient.

(3) The upper part of the handle part of the drag hook is provided with the grooves with two symmetrical sides, and a special matched traction piece can be quickly clamped and annularly fixed at the upper end of the shank, so that the number of operators can be reduced, and the operation of the operators is more convenient.

Drawings

FIG. 1 is a schematic view of a knee joint operation unshielded retractor according to example 1 of the present invention;

FIG. 2 is a schematic view of the non-shielding retractor for knee joint surgery in example 1 of the present invention;

FIG. 3 is a schematic view of the non-shielding retractor for knee joint surgery in example 1 of the present invention;

FIG. 4 is a front view of the unhooking retractor for knee joint surgery in accordance with embodiment 2 of the present invention;

FIG. 5 is a schematic view of the non-shielding retractor for knee joint surgery in example 2 of the present invention shown in FIG. 1;

FIG. 6 is a schematic view of the non-shielding retractor for knee joint surgery in example 2 of the present invention;

FIG. 7 is a schematic view of the non-shielding retractor for knee joint surgery in example 1 of the present invention;

FIG. 8 is a schematic view of the non-shielding retractor for knee joint surgery in example 1 of the present invention shown in FIG. 5;

1-handle portion, 2-bending portion, 2 a-bending portion, 31-hook head portion, 31 a-hook head portion, 32-straight portion, 32 a-straight portion, 11-T-shaped groove.

Detailed Description

The following examples are intended to illustrate the utility model but are not intended to limit the scope of the utility model. Unless otherwise specified, the technical means used in the examples are conventional means well known to those skilled in the art.

Example 1

As shown in fig. 1-3, in a first aspect of the present embodiment, a knee joint surgery non-shielding retractor is provided, which includes a handle portion 1, a bending portion 2 and a hook body, the bending portion 2 connects the hook body and the handle portion 1, the length of the bending portion 2 during stretching is 7% -8% of the overall length of the retractor, the bending portion 2 is arc-shaped, the edges of the handle portion 1, the bending portion 2 and the hook body are all fillet transitions, the total length of the retractor is 15.1cm, and the length of the bending portion 2 of the retractor is suitable for stretching the inner soft tissue or the thin patient. The total size of the drag hook is smaller, the drag hook accords with the Asian people with relatively smaller body sizes, most of knee joint drag hooks used in the past are large in size, especially import drag hooks, are too heavy for Chinese people, and are inconvenient for doctors to operate.

Handle portion 1 and hook body 3's extension line angle of intersection is 30 degrees, for traditional drag hook angle of buckling in the past, increase the degree of buckling in this embodiment and make drag hook handle portion fully be close to knee joint side when operating, make observation and instrument operation do not have shelter from and hinder in the art, avoided the drag hook when the operation assistant in order to expose the art wild and have to pull the drag hook to both sides hard, lead to damaging important organizational structure such as knee joint collateral ligament or sclerotin, influence the operation effect.

As shown in fig. 1-3, the handle portion 1 of the retractor is straight and the hook body comprises a hook head portion 31 and a straight portion 32, the straight portion 32 has a plate-like structure and has wing-shaped slopes on both sides, and referring to the hook body portion of the retractor in fig. 1-3, the hook head portion 31 has a tapered structure, preferably, the tapered structure has an acute angle structure with an end portion of 12 ° to 15 °. The hook head part 31 is in an arc surface shape which is gradually far away from the extension surface of the straight part 32, and the hook body can be more easily and accurately inserted into an operation position by the tapering structure of the hook head part 31 and the arrangement of the arc surface shape, so that the stability of the exposure of an operation field can be improved, and the tissue damage can be reduced or avoided.

The upper part of the handle part 1 of the drag hook is provided with a traction piece connecting part, and particularly referring to fig. 1 and 2, the traction piece connecting part is T-shaped grooves 11 symmetrically arranged at two sides of the handle part, and a special matched elastic belt or a disinfection bandage can be quickly clamped into the T-shaped grooves 11 as a traction piece during operation and is annularly fixed at the upper end of the lower leg

In some alternative embodiments, the intersection angle of the extension line of the handle portion 1 and the extension line of the straight portion 32 may be any angle of 25 to 35 degrees other than 30 degrees,

in an alternative embodiment, as shown in fig. 7, the hook head portion 31a may be a straight plate shape having an angle with respect to the straight portion 32 a.

In an alternative embodiment, the towing member connecting portion may be L-shaped grooves symmetrically disposed on both sides of the handle portion, and in another alternative embodiment, the towing member connecting portion may be J-shaped grooves symmetrically disposed on both sides of the handle portion, and similarly, the shape of the grooves may be other suitable shapes for fixing the towing member.

In an alternative embodiment, as shown in fig. 8, the bent portion 2a may be provided in a folded-face structure.

Example 2

Referring to fig. 4 to 6, the length of the bending part 2 of the unhindered knee joint operation retractor provided by the embodiment accounts for 9 to 10 percent of the overall length of the retractor, and the unhindered knee joint operation retractor can be suitable for pulling out patella and lateral soft tissues or obese patients. Other structures in this embodiment are the same as those in embodiment 1, and are not described again here.

Example 3

The embodiment provides a knee joint operation does not have and shelters from drag hook system, including in embodiment 1 or embodiment 2 arbitrary knee joint operation does not have and shelters from the drag hook, still includes the elastic band, and the elastic band can cooperate with T shape recess 11 of knee joint operation does not have and cup joints, both reducible assistant's number during the operation, more makes things convenient for the art person to operate again

When the knee joint retractor is used, the hook head part 31 of the retractor with a large span (as described in embodiment 2) is inserted into a gap between the outer edge of a tibial plateau and outer soft tissues from the inner side of an everted or pushed patella of a knee joint at a buckling position, then the hook head part 31 of the retractor with a small span (as described in embodiment 1) is inserted into a gap between the inner edge of the tibial plateau and the inner soft tissues, the tail ends of two retractor handles face downwards, an assistant pushes the two retractor handles towards limbs or an elastic band (or a non-elastic band) is fixed on a special T-shaped groove 11 structure at the tail end of the handles around the upper section of a tibia and is tightened, the knee joint can be fully exposed, and meanwhile, the handle part 1 of the retractor is completely free from blocking and interference on instrument operation.

In an alternative embodiment, the elastic band may be replaced by a bandage, or other suitable means of fixation that can be used with a band, string, thread or other means of fixation that can be adapted to the leg of the body.

Although the utility model has been described in detail hereinabove with respect to a general description and specific embodiments thereof, it will be apparent to those skilled in the art that modifications or improvements may be made thereto based on the utility model. Accordingly, such modifications and improvements are intended to be within the scope of the utility model as claimed.

Claims (9)

1. The utility model provides a knee joint operation does not have and shelters from drag hook which characterized in that, includes hook body, kink and handle portion, the kink is connected the hook body with handle portion, the flat length of exhibition of kink accounts for 7% -8% or 9% -10% of the whole flat length of exhibition of drag hook, handle portion with the extension line intersect angle of hook body is 25 degrees-35 degrees, drag hook handle portion upper portion has a connecting portion that pulls.

2. The knee joint surgery unobstructed retractor according to claim 1 wherein said hook head of said hook body is configured to be curved relative to said hook body.

3. The knee joint surgery unobstructed retractor according to claim 1 wherein said hook head portion of said hook body is of tapered configuration.

4. The knee joint surgery unobstructed retractor according to claim 1 wherein said bend portion is arcuate in configuration.

5. The knee joint surgery unobstructed retractor according to claim 1 wherein said retractor attachment portions are symmetrically disposed recesses on opposite sides of said handle portion.

6. The knee joint surgery unobstructed retractor according to claim 5 wherein said notch is any one of a T-shape, an L-shape or a J-shape.

7. The knee joint surgery unobstructed retractor of claim 2 wherein said retractor edge portions and said hook head tip portions are rounded off transitions.

8. An unobstructed retractor system for knee joint surgery, comprising the unobstructed retractor for knee joint surgery of any one of claims 1 to 7, and further comprising a traction member, wherein the traction member is in fit and sleeve joint with the connection portion of the traction member of the unobstructed retractor for knee joint surgery.

9. The knee joint surgery unobstructed retractor system of claim 8 wherein said retractor member is an elastic band or bandage.

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