CN105902285B - A Deployable Retractor for Breast Tumor Surgery - Google Patents

Abstract

The invention discloses a deployable retractor for breast tumor surgery. The end claw is unfolded by rotating a handle to support the tissue around a breast surgery incision, and provide a field of vision and operation space for a doctor's surgical operation; the retractor mainly includes: It is divided into a motion unit part and a main structure of the retractor, wherein the motion unit part includes a vertical motion unit (1), a horizontal motion unit (2), and a self-locking device (3); the retractor structure is composed of a fixing frame (4) , Adjustment handle (5), lead screw (6), nut (7), guide rail (8), intermediate connecting plate (9), adjustment link group (10), mechanism spindle (11), intermediate transmission shaft (12) , the end claw (13) is composed. The present invention controls the opening and closing movement of the end claw (13) by rotating the adjusting handle (5), completes the task of opening the tissue around the wound, adjusts the vertical (1) and horizontal movement units (2), and inserts the retractor into the incision Expand and support the tissue, providing the doctor with a field of vision and room for manipulation.

Description

A Deployable Retractor for Breast Tumor Surgery

technical field

The invention relates to a deployable retractor for breast tumor surgery; in particular, it is a device that provides a support function for the tissue at the front of a breast tumor surgical incision, and provides a surgeon with an operating field of view and an operating space. A retraction device.

Background technique

Breast tumor has become a major public health problem in the current society, and surgery is the main method for the treatment of breast tumor. With the rapid development of medical science and technology, breast surgery is also progressing. Traditional surgical excision treatment methods cannot meet the needs of patients for breast beauty due to large trauma and permanent scars left on the breast skin. At present, segmental or partial breast tissue resection combined with axillary lymph node dissection is the most commonly used surgical method. Its main advantage is that the trauma is small and the breast shape can be preserved. Keeping the wound open requires the use of appropriate retraction devices.

The retractor is used to retract the tissue, reveal the surgical field, and facilitate exploration and operation. It can be divided into two types: hand-held retractors and automatic retractors. At present, for small incision surgery such as breast tumors, hand-held retractors are often used due to individual differences in patients and different incision positions. During the operation, the retraction device needs to be operated by an assistant to keep it in a pulling state, which is very inconvenient and This retraction method requires a large number of assistants; although the existing retractor specially used for thoracic surgery can achieve the functions of fixation and retraction, its end shape is relatively cumbersome, and it is not suitable for breast tumor surgery with small incisions. In addition, since the distal end of the retractor needs to be adjusted in real time according to the operation process during the operation, the adjustment method of the distal end of the existing retractor is laborious and inconvenient for assistants to operate. To our knowledge, no such retractor has been reported that is suitable for small incisions and can be adjusted according to the patient's breast size. In order to facilitate doctors to perform retraction operations for small incision operations on breast tumors, it is necessary to design a deployable automatic retractor for breast tumor operations.

SUMMARY OF THE INVENTION

The object of the present invention is to provide a deployable retractor for breast tumor surgery. The retractor mainly includes two parts: a motion unit part and a retractor main body; the motion unit part includes a vertical motion unit (1), a horizontal motion unit (2) and a self-locking device (3); the retractor main body is composed of a fixed frame. (4), adjusting handle (5), lead screw (6), nut (7), guide rail (8), intermediate connecting plate (9), adjusting link group (10), mechanism main shaft (11), intermediate transmission shaft (12) and the end clamping claw (13). The opening and closing movement of the end jaws (13) is controlled by turning the adjusting handle (5) to complete the support for the tissue around the wound; by adjusting the vertical and horizontal linear guides, the retractor is inserted into the incision and spreads the tissue, providing the doctor with vision.

In order to achieve the above object, the present invention provides the following technical solutions:

The movement unit part of the retraction device is composed of a vertical movement unit (1), a horizontal movement unit (2) and a self-locking device (3). The vertical motion unit (1) is installed vertically with the horizontal motion unit (2); the position of the end claw (13) along the incision insertion direction is adjusted by rotating the handle of the horizontal motion unit (2); by rotating the vertical motion unit (1) The handle adjusts the vertical position of the retractor; the movement unit is locked by the self-locking device (3). At the same time, the rear of the vertical motion unit (1) can be connected with different fixed support structures to fix the retractor on the operating table.

Further, in the main structure of the retractor, the fixing frame (4) is partially connected with the moving unit, and the other end is fixedly connected with the main shaft (11) of the mechanism; the lead screw (6) is connected with the nut (7) fixed on the fixing frame (4). ) connection, one end of which is fixedly connected with the adjustment handle (5) through a set screw, and the other end is connected with the intermediate connecting plate (9), which can be rotated relative to it. The intermediate connecting plate (9) is connected to the guide rail (8) fixed under the fixing frame (4) through the slider, and moves along the guide rail. An intermediate shaft is installed on the other side of the intermediate connecting plate (9), and the intermediate shaft passes through the adjusting connection. One end of the rod group (10).

Further, there are four groups of adjustment connecting rod groups (10) in total, and each adjustment connecting rod group (10) is composed of two connecting rods with different lengths; The positioning hole drives the adjustment link group (10) to rotate relative to the main shaft (11) through the forward and backward movement of the intermediate connecting plate (9); the other end of the adjustment link group (10) and the end claw (13) pass through the intermediate transmission shaft ( 12) Fixed together; the end jaws (13) all pass through the main shaft (11) of the mechanism and can rotate relative to it, and one of the terminal jaws is fixedly connected to the end of the main shaft (11) of the mechanism, and is not connected with the intermediate transmission shaft (12). 12) Connect.

Preferably, the opening and closing of the end claw (13) is realized by the rotation of the adjustment handle (5). Rotate the adjustment handle (5), move through the lead screw (6), make the intermediate connecting plate (9) move forward and backward along the guide rail (8), and drive the adjustment link group (10) to rotate in different directions relative to the main shaft (11) of the mechanism; Through the transmission of the intermediate transmission shaft (12), the movement of the end claw (13) and the adjustment link (10) are kept consistent.

Preferably, the rotation angle of the jaws (13) is determined by adjusting the length of the connecting rods in the connecting rod group (10). The distance between the connecting hole connecting one end of the intermediate connecting plate (9) and the connecting hole connecting the main shaft (11) is equal. Different groups of connecting rods in the ) have different rotation angles and directions, which drive the end jaws (13) to rotate at different angles to form a rake-like structure.

Further, the material of the end claw (13) is made of medical stainless steel; the retractor adjustment handle (5) and the handle of the motion unit are located in front of the retractor and can be operated by an operator.

The beneficial effects of the present invention are:

The retractor of the present invention can realize the opening and closing of the end claw (13) by manually rotating the adjusting handle (5), and the driving mode is simple and reliable; The surgeon behind the retractor performs the operation. The retractor can be fixed to the slot on the edge of the operating table through a fixed support structure, the fixing method is simple, and it does not need to be hand-held after fixing, which reduces the workload of medical staff.

When the jaws are closed, the volume is small, which can be smoothly inserted into the incision and opened inside, reducing the size of the surgical incision; the shape of the terminal jaws is bent, which can reduce the damage to the tissue.

The position of the end claw (13) is adjusted by adjusting the vertical motion unit (1) and the horizontal motion unit (2), and it is not necessary to always hold the handle in the guide rail after adjustment. During the operation, open the end claw (13) of the retractor, and after adjusting its position, the adjusting handle (5) can be released, which is convenient for operation. The above operations can be performed by one medical staff, reducing the number of medical staff during the operation.

Description of drawings

Fig. 1 is the schematic diagram of the retractor of the present invention in the open state

FIG. 2 is a schematic diagram 1 of the retractor closed state of the present invention.

FIG. 3 is a schematic diagram of the closed state of the retractor of the present invention 2

Fig. 4 is the principle diagram of the movement of the adjusting connecting rod group of the present invention

Detailed ways

The present invention will be described in detail below with reference to the accompanying drawings. The description is based on the description of the presently preferred embodiments of the retractor of the present invention, and does not represent the only form in which the present invention can be constructed or used.

A deployable retractor for breast tumor surgery, Fig. 1 is a structural diagram of the retractor of the present invention, the present invention is mainly divided into a motion unit part, the main structure of the retractor; wherein the motion unit part includes vertical motion unit (1), horizontal movement unit (2), self-locking device (3); the main structure of the retractor consists of a fixing frame (4), an adjustment handle (5), a lead screw (6), a nut (7), a guide rail ( 8), the intermediate connecting plate (9), the adjusting link group (10), the main shaft of the mechanism (11), the intermediate transmission shaft (12), and the end claw (13).

Referring to Figure 1, the motion unit part of the retractor is composed of a vertical motion unit (1) and a horizontal motion unit (2). The position in the transverse plane perpendicular to the operating table. Adjust the position of the end claw (13) along the insertion direction of the incision by rotating the end handle of the horizontal motion unit; adjust the vertical position of the retractor by rotating the end handle of the vertical motion unit. After the motion unit is adjusted, the self-locking device ( 3) Lock.

The rear part of the vertical movement unit (1) is provided with installation holes, which are connected with different fixed support structures to fix the retractor on the operating table.

1 and 2, the main structure of the retractor includes a fixing frame (4), an adjustment handle (5), a lead screw (6), a nut (7), a guide rail (8), an intermediate connecting plate (9), Adjust the connecting rod group (10), the mechanism main shaft (11), the intermediate transmission shaft (12), and the end claw (13). The fixing frame (4) is partially connected with the moving unit, and the other end is fixedly connected to the main shaft (11) of the mechanism; the lead screw (6) adopts a trapezoidal lead screw, which can be self-locking, and the middle part is fixedly connected to the fixing frame (4) through a trapezoidal thread. One end is connected with the adjusting handle (5) by a set screw, and the other end is connected with the intermediate connecting plate (9) by a bearing, which can be rotated relative to the fixed connecting plate (9); the end of the lead screw (6) is connected There is a fixing nut to prevent the lead screw from being separated from the bearing and the intermediate connecting plate (9).

The intermediate connecting plate (9) is connected with the guide rail (8) fixed under the fixing frame (4) through the slider, and moves along the guide rail (8). The other side of the intermediate connecting plate (9) is provided with an intermediate shaft, which passes through the guide rail (8). One end of the four sets of adjustment connecting rod sets (10) is connected with it.

The adjusting connecting rod group (10) has a total of four groups, and each adjusting connecting rod group (10) is composed of two connecting rods with different lengths, and the two connecting rods are connected with each other and can rotate with each other. The end of one connecting rod is passed through the intermediate shaft in the intermediate connecting plate (9), and the connecting rod can rotate along the intermediate shaft; the middle of the other connecting rod has a positioning hole, which is passed through by the main shaft (11) of the mechanism, and the connecting rod can rotate along the intermediate shaft. It can be rotated along the main shaft (11) of the mechanism, and the end of the connecting rod is fixedly connected with the intermediate transmission shaft (12).

The forward and backward movement of the intermediate connecting plate (9) in the retractor can drive four sets of adjustment link groups (10) to rotate in different directions relative to the main shaft (11), and the other end of the adjustment link group (10) and the end claw ( 13) The intermediate transmission shafts (12) are fixedly connected together, and the clamping claws (13) all pass through the main shaft (11) of the mechanism and can rotate relative to the main shaft (11) of the mechanism. One of the end jaws is always fixed on the end of the main shaft of the mechanism and is not connected with the intermediate transmission shaft (12). At the same time, the rotation angle of the end claw (13) is consistent with the rotation angle of the adjustment link group (10) that drives the rotation.

The opening and closing of the end claw (13) is realized by the rotation of the adjustment handle (5). Rotate the adjustment handle (5) to make the lead screw (6) move forward and backward while rotating along the nut (7), and drive the intermediate connecting plate (9) to move forward and backward along the guide rail (8), and the movement of the intermediate connecting plate (8) simultaneously drives the four The adjustment link group (10) rotates in different directions relative to the main shaft (11) of the mechanism, and the movement of the adjustment link group (10) is transmitted to the end claw (13) through the intermediate transmission shaft (12), and drives different end clamps. The claw (13) rotates to different angles relative to the main shaft (11) of the mechanism.

The rotation angle of the jaws (13) in the retractor is determined by adjusting the length of the connecting rods in the connecting rod group (10). As shown in FIG. 4 is the principle diagram of the movement of the adjusting connecting rod group of the present invention. The four adjusting connecting rod groups (10) are composed of two connecting rods with different lengths, namely connecting rod assembly 1 and connecting rod assembly 2. The connecting rod assembly 1 and the connecting rod assembly 2 of each connecting rod group have the same length but are installed symmetrically. Group installation and movement are smooth. Since the lengths of the connecting rods in different connecting rod groups are different, as the intermediate connecting plate (9) moves the same distance, the two connecting rods in the connecting rod group rotate relative to each other, and the rotation angle of the connecting rod assembly 2 of each connecting rod group is the same as Different directions, as shown in Figure 4, rotate to a certain position, the angle 1 and angle 2 of different link groups are different, the rotation angle and direction of the link are different, and the end claw (13) is driven to rotate at different angles and directions to form rake structure.

The method for using the retractor of the present invention includes, before starting the operation, fixing the retractor by using the mounting hole at the rear of the vertical motion unit (1), and adjusting the vertical motion unit (1) and the horizontal motion unit (2) so that the The end claw (13) moves to an appropriate position; the adjusting handle (5) is rotated to make the end claw (13) in a closed state, that is, the closed state of the end claw of the present invention shown in FIG. 3 .

At the beginning of the operation, adjust the handle of the horizontal movement unit (2) so that the end claw (13) is inserted into the surgical incision, and continues to move forward, while turning the adjustment handle (5), gradually open the end claw (13), and finally It is inserted into a suitable position of the wound and opened to a suitable angle, that is, the open state of the end claw shown in FIG. 1 .

Then, the handle of the vertical motion unit (1) is rotated to raise the height of the end claw (13), so as to provide a surgeon with an operating field of view and an operating space. After the adjustment is completed, the vertical motion unit (1) and the horizontal motion unit (2) are locked, and the retractor is kept in the open state during the operation.

After the operation, according to the reverse process to the above, unlock the vertical movement unit (1), lower the height of the end claw (13); turn the adjustment handle (5), and gradually close the end claw (13) to the state shown in Figure 2 ; Unlock the horizontal motion unit (2), and adjust its handle so that the end jaws (13) are slowly withdrawn from the surgical incision, and then adjust the vertical motion unit (1) to raise the position of the retractor body to keep it away from patient.

The invention is not limited to the details of the above-described exemplary examples, and the invention can be embodied in other specific forms without departing from the essential characteristics of the invention, all of which should be considered as exemplary. The scope of the invention is defined by the appended claims, all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims shall not be construed as limiting claims. Meanwhile, the above-mentioned specific embodiments are only for the sake of clarity, and those skilled in the art should take the description as a whole, and the steps in the above-mentioned implementation method can be appropriately combined and changed, but do not deviate from the basic principles and characteristics of the present invention, so that those skilled in the art can understand other implementations.

Claims (6)

1. An expandable retractor for breast tumor surgery, comprising: the motion unit part and the retractor body part; the motion unit part comprises a vertical motion unit (1), a horizontal motion unit (2) and a self-locking device (3); the retractor main body comprises a fixed frame (4), an adjusting handle (5), a lead screw (6), a nut (7), a guide rail (8), a middle connecting plate (9), an adjusting connecting rod group (10), a mechanism main shaft (11), a middle transmission shaft (12) and a tail end clamping jaw (13);

in the main structure of the retractor, a fixed frame (4) is connected with a movement unit part, and the other end of the fixed frame is fixedly connected with a mechanism main shaft (11); the screw rod (6) is connected with a nut (7) fixedly connected on the fixed frame (4), one end of the screw rod is fixedly connected with the adjusting handle (5) through a set screw, the other end of the screw rod is connected with a middle connecting plate (9) and can rotate relative to the middle connecting plate, the middle connecting plate (9) is connected with a guide rail (8) fixedly connected below the fixed frame (4) through a sliding block and moves along the guide rail, an intermediate shaft is arranged on the other side of the middle connecting plate (9), and the intermediate shaft penetrates through one end of the adjusting connecting rod set (10);

the number of the adjusting connecting rod groups (10) is at least two, and each group of adjusting connecting rod groups (10) consists of two connecting rods with different lengths; the mechanism main shaft (11) penetrates through a positioning hole in the middle of the adjusting connecting rod group (10), and the adjusting connecting rod group (10) is driven to rotate relative to the main shaft (11) through the back-and-forth movement of the middle connecting plate (9); the other end of the adjusting connecting rod group (10) is fixedly connected with a tail end claw (13) through a middle transmission shaft (12); the tail end claws (13) penetrate through the mechanism main shaft (11) and can rotate relative to the mechanism main shaft, wherein one tail end claw is fixedly connected to the tail end of the mechanism main shaft (11) and is not connected with the middle transmission shaft (12);

the opening and closing movement of the end claw (13) is controlled by rotating the adjusting handle (5) to complete the support of the tissues around the wound, and the retractor is inserted into the incision and props open the tissues by adjusting the vertical (1) and horizontal movement units (2).

2. An expandable retractor for use in breast tumor surgery according to claim 1, wherein: in the retractor movement unit part, a vertical movement unit (1) and a horizontal movement unit (2) are vertically arranged; the position of the end claw (13) along the insertion direction of the incision is adjusted by rotating the handle of the horizontal movement unit (2); the position of the retractor perpendicular to the direction of the operating table is adjusted by rotating a handle of the vertical motion unit (1); the motion unit is locked by a self-locking device (3); the rear part of the vertical motion unit (1) can be connected with different fixed supporting structures to fix the retractor on an operating table.

3. An expandable retractor for use in breast tumor surgery according to claim 1, wherein: the adjusting connecting rod group (10) has four groups.

4. An expandable retractor for use in breast tumor surgery according to claim 1, wherein: the opening and closing of the tail end claw (13) are realized by the rotation of the adjusting handle (5); the adjusting handle (5) is rotated, moves through the lead screw (6), so that the middle connecting plate (9) moves back and forth along the guide rail (8), and drives the adjusting connecting rod group (10) to rotate along different directions relative to the mechanism main shaft (11); the tail end claw (13) and the adjusting connecting rod group (10) keep consistent in movement through the transmission of the middle transmission shaft (12).

5. An expandable retractor for use in breast tumor surgery according to claim 1, wherein: the rotation angle of the claw (13) is determined by the length of a connecting rod in the adjusting connecting rod group (10); the lengths of all connecting rods forming the connecting rod group (10) are different, the adjusting handle (5) is rotated, the rotating angles and the directions of the connecting rods of different groups in the connecting rod group (10) are different, and the tail end clamping jaw (13) is driven to rotate by different angles to form a rake-shaped structure.

6. An expandable retractor for use in breast tumor surgery according to claim 1, wherein: the end claw (13) is made of medical stainless steel; the adjusting handle (5) of the retractor and the handle of the motion unit are positioned in front of the retractor and can be operated by an operator.

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