CN217697429U - Negative pressure fixing device for needle cylinder of screw injector - Google Patents
Negative pressure fixing device for needle cylinder of screw injector Download PDFInfo
- Publication number
- CN217697429U CN217697429U CN202221054245.9U CN202221054245U CN217697429U CN 217697429 U CN217697429 U CN 217697429U CN 202221054245 U CN202221054245 U CN 202221054245U CN 217697429 U CN217697429 U CN 217697429U
- Authority
- CN
- China
- Prior art keywords
- negative pressure
- piston
- fixing device
- syringe
- pressure fixing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model provides a negative pressure fixing device for a needle cylinder of a screw injector, relating to the technical field of medical instruments. The negative pressure fixing device for the needle cylinder of the screw injector comprises a needle cylinder body, a piston and an elastic support; the piston is inserted in the syringe body; one end of the elastic bracket is arranged on the piston, and the other end of the elastic bracket can be abutted against the inner wall of the needle cylinder body; the syringe body is provided with a retractable connecting groove used for connecting one end of the elastic bracket far away from the piston. The technical effect of convenient operation is achieved.
Description
Technical Field
The utility model relates to the technical field of medical equipment, particularly, relate to screw injector cylinder negative pressure fixing device.
Background
Adipose tissue, a kind of connective tissue, has functions of protection, support, energy storage, endocrine, etc. Adipose tissue harvested from an autologous source may perform the same function after transplantation into a recipient area. According to the function and application, the method can be divided into three aspects of defect filling, cosmetic treatment, other treatment and the like. Autologous fat transplantation, as a comprehensive technique, comprises the following main steps: preoperative preparation, fat acquisition, fat treatment and purification, fat injection, postoperative care and the like. Wherein, the acquisition, purification and injection are three main steps closely related to the effect of the operation.
In order to improve the survival rate after fat transplantation and reduce the related complications, it is necessary to reduce the number of procedures affecting the activity of fat as much as possible. And the step of obtaining fat is the step which most affects the activity of the fat. The method for obtaining fat is liposuction, which is divided into liposuction with liposuction machine and liposuction with hand-held syringe by reserved air. Among them, the main factors affecting the fat activity are tumescent fluid and suction negative pressure. The common negative pressure range of the liposuction machine for clinical application is 40-80kPa, and the negative pressure generated by a common 60ml syringe is 26-40kPa. It is thought that the shear force applied to the cell membrane by the fat sucked by the syringe is lower than that applied by a liposuction machine under a lower negative pressure, and cells with relatively large volumes are more sensitive to the shear force. The research finds that the damage degree of the fat by various methods is as follows: shearing method < syringe aspiration method < liposuction aspiration method. After the research, the pressure of liposuction is considered to be the power for removing fat and the reason for causing fat damage; when the pressure is small, mechanical damage such as pressure and collision of fat particles with the tube wall are the cause of fat cell damage, and when the pressure reaches 95kP, the vaporization of the liquid can break the fat cells, which becomes the main factor of fat damage. Therefore, in order to ensure that the fat before transplantation is damaged as little as possible, it is necessary to use a method of low-pressure suction. The low-pressure manual suction method adopting the needle cylinder as a suction tool can limit the pressure within 50kPa and has small influence on the activity of fat. In addition, mechanical liposuction is relatively expensive compared to manual liposuction, and may place some economic stress on some patients. Secondly, many institutions currently do not have liposuction-related machinery, and most of them still use manual liposuction as a main part at present.
The negative pressure in the manual liposuction comes from the drawing back of the syringe piston, then the piston is clamped by a vascular clamp or a hand to form small negative pressure, and suction is performed at the same subcutaneous level through the forward and backward movement of an arm. However, clinical practice shows that when the main piston is clamped by the vascular clamp, the vascular clamp can partially affect the suction of an operating physician, and even the vascular clamp can loosen and bounce to affect the operation. When the main piston is clamped by hand, the hand is far away from the joint of the needle cylinder and the liposuction needle, the action amplitude during suction can influence the joint of the screw ports of the needle cylinder and the liposuction needle, and the hand can continuously exert force to maintain negative pressure and is easy to fatigue.
Therefore, it is an important technical problem to be solved by those skilled in the art to provide a screw injector syringe negative pressure fixing device which is convenient to operate.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a screw injector cylinder negative pressure fixing device to alleviate the technical problem of inconvenient operation among the prior art.
In a first aspect, an embodiment of the present invention provides a negative pressure fixing device for a screw injector syringe, including a syringe body, a piston and an elastic support;
the piston is inserted in the syringe body;
one end of the elastic support is arranged on the piston, and the other end of the elastic support can be abutted against the inner wall of the needle cylinder body;
the needle cylinder body is provided with a retractable connecting groove used for connecting one end of the elastic support far away from the piston.
With reference to the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, wherein the elastic support includes a mounting ring and a plurality of elastic pieces;
the mounting ring is sleeved on the piston, and one end of the elastic sheet is fixed on the mounting ring.
In combination with the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, wherein the elastic sheet is L-shaped, and the long end of the elastic sheet is fixed on the mounting ring, so that the short edge of the elastic sheet can be clamped into the connecting groove.
With reference to the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, wherein the number of the elastic pieces is four, and the four elastic pieces are uniformly distributed on the mounting ring;
the syringe body is internally provided with four retractable connecting grooves corresponding to the elastic sheets along the circumferential direction.
In combination with the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, wherein the cross section of the above-mentioned retractable connecting groove is a right triangle, so that the elastic piece follows the piston to be pulled out from the inside of the syringe body, and the elastic piece can be separated from the retractable connecting groove.
In combination with the first aspect, embodiments of the present invention provide a possible implementation manner of the first aspect, wherein the retractable connecting groove is formed in the syringe body along a length direction of the syringe body.
In combination with the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, wherein the outer wall of the syringe body is provided with a negative pressure identification line along the length direction thereof, and the negative pressure identification line corresponds to the retractable connecting groove.
In combination with the first aspect, embodiments of the present invention provide a possible implementation manner of the first aspect, wherein a fixing groove is disposed at an end of the syringe body, which is away from the needle.
In combination with the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, wherein a cross section of the fixing groove is U-shaped.
In combination with the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, wherein a mounting groove for mounting the mounting ring is provided on the piston at the piston handle.
Has the beneficial effects that:
the embodiment of the utility model provides a negative pressure fixing device for a screw injector needle cylinder, which comprises a needle cylinder body, a piston and an elastic bracket; the piston is inserted in the syringe body; one end of the elastic bracket is arranged on the piston, and the other end of the elastic bracket can be abutted against the inner wall of the needle cylinder body; the needle cylinder body is provided with a retractable connecting groove used for connecting one end of the elastic bracket far away from the piston.
Specifically, in the process of liposuction operation, the piston is pulled out to a set position, so that the elastic support arranged on the piston can be matched with the retractable connecting groove arranged on the syringe body, the piston is fixed at the moment, stable negative pressure is formed in the syringe body, so that medical staff can operate, and the medical staff is not required to continuously apply force to maintain the negative pressure.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a sectional view of a negative pressure fixture for a syringe of a screw injector according to an embodiment of the present invention;
FIG. 2 is a schematic view of the middle elastic piece and the detachable connection groove of the negative pressure fixing device of the syringe cylinder of the screw injector provided by the embodiment of the present invention;
fig. 3 is a schematic view of the elastic sheet and the fixing groove in the negative pressure fixing device of the syringe of the screw injector provided by the embodiment of the present invention.
Icon:
100-syringe body; 110-releasable connecting slots; 120-fixed groove;
200-a piston;
300-a flexible support; 310-a mounting ring; 320-shrapnel; 321-short side; 322-long side.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
The present invention will be described in further detail below with reference to specific embodiments and with reference to the attached drawings.
Referring to fig. 1, 2 and 3, an embodiment of the present invention provides a negative pressure fixing device for a screw injector syringe, including a syringe body 100, a piston 200 and an elastic support 300; the piston 200 is inserted in the cylinder body 100; one end of the elastic holder 300 is disposed on the piston 200, and the other end of the elastic holder 300 can abut against the inner wall of the cylinder body 100; the syringe body 100 is provided with a releasable coupling groove 110 for coupling an end of the resilient supporter 300 remote from the piston 200.
Specifically, in the process of liposuction, the piston 200 is pulled out to a set position, so that the elastic support 300 arranged on the piston 200 can be matched with the retractable connecting groove 110 arranged on the syringe body 100, and at the moment, the piston 200 is fixed, so that stable negative pressure is formed in the syringe body 100, and medical staff can operate the syringe conveniently without continuously applying force to maintain the negative pressure.
Referring to fig. 1, 2 and 3, in an alternative of the present embodiment, the elastic support 300 includes a mounting ring 310 and a plurality of resilient pieces 320; the mounting ring 310 is sleeved on the piston 200, and one end of the spring 320 is fixed on the mounting ring 310.
Specifically, the elastic support 300 includes a mounting ring 310 and a plurality of resilient tabs 320, one end of each of the resilient tabs 320 is fixed to the mounting ring 310, the mounting ring 310 is sleeved on the piston 200, and when the piston 200 moves in the syringe body 100, one end of each of the resilient tabs 320, which is far away from the mounting ring 310, can abut against the inner wall of the syringe body 100.
Referring to fig. 1, 2 and 3, in an alternative embodiment, the resilient plate 320 is L-shaped, and the long end of the resilient plate 320 is fixed on the mounting ring 310, so that the short side 321 of the resilient plate 320 can be snapped into the releasable connecting slot 110.
Specifically, the resilient tab 320 may be formed in an L-shape, so that the short edge 321 of the resilient tab 320 can be inserted into the releasable connecting groove 110, thereby achieving the purpose of temporarily fixing the piston 200.
Referring to fig. 1, 2 and 3, in an alternative of the present embodiment, the number of the resilient pieces 320 is four, and four resilient pieces 320 are uniformly distributed on the mounting ring 310; the syringe body 100 is provided with four releasable connecting slots 110 corresponding to the resilient tabs 320 along the circumferential direction thereof.
Specifically, when the piston rod of the piston 200 is cross-shaped, the number of the resilient pieces 320 may be four, so as to maintain the stress balance of the piston 200.
Referring to fig. 1, 2 and 3, in an alternative embodiment, the section of the releasable connecting groove 110 is a right triangle, so that when the resilient tab 320 is pulled out of the syringe body 100 along with the piston 200, the resilient tab 320 can be disengaged from the releasable connecting groove 110.
Specifically, the cross section of the releasable connecting groove 110 can be set to be a right triangle, so when the piston 200 drives the elastic sheet 320 to be pulled out, when the elastic sheet 320 moves to the releasable connecting groove 110, the elastic sheet 320 can be elastically acted to enable the short edge 321 of the elastic sheet 320 to enter the releasable connecting groove 110, the temporary fixation is required at the moment, if the piston 200 is required to be continuously pulled out, the medical staff can exert force, the short edge 321 of the elastic sheet 320 can move to the hypotenuse of the right triangle of the releasable connecting groove 110 at the moment, so that the short edge 321 of the elastic sheet 320 contracts towards the piston rod of the piston 200 under the action of stress, and the short edge 321 of the elastic sheet 320 is discharged from the releasable connecting groove 110.
Referring to fig. 1, 2 and 3, in an alternative embodiment of the present invention, a plurality of releasable coupling slots 110 are formed in the syringe body 100 along a length direction thereof.
Specifically, according to different negative pressure requirements, medical staff can connect the resilient piece 320 with the releasable connecting groove 110 at different positions in a matching manner.
Referring to fig. 1, 2 and 3, in an alternative embodiment of the present invention, a negative pressure identification line is provided on an outer wall of the syringe body 100 along a length direction thereof, and corresponds to the releasable coupling groove 110.
Specifically, a negative pressure mark line may be disposed on the outer wall of the syringe body 100, so that the medical staff can clearly know the negative pressure value corresponding to each releasable connecting slot 110 along the length of the syringe body 100, so as to facilitate the operation of the medical staff.
Referring to fig. 1, 2 and 3, in an alternative embodiment, the syringe body 100 is provided with a fixing groove 120 at an end away from the needle.
Specifically, a fixing groove 120 is formed at an end of the syringe body 100 away from the needle, and the short edge 321 of the resilient tab 320 can be fixed by the fixing groove 120.
In addition, the short edge 321 of the elastic sheet 320 needs to be taken out from the fixing groove 120, and the medical staff can pinch the long edge 322 of the elastic sheet 320 inwards by hand, so as to drive the short edge 321 to retract inwards.
Referring to fig. 1, 2 and 3, in an alternative embodiment, the fixing groove 120 has a U-shaped cross section.
Specifically, the fixing groove 120 may be provided in a U-shape in cross section.
In an alternative embodiment, the piston 200 is provided with a mounting groove at the handle of the piston 200 for mounting the mounting ring 310.
Specifically, a mounting groove is formed in the piston 200 at the handle of the piston 200, so that medical staff can press the long edge 322 of the elastic piece 320 conveniently.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the embodiments of the present invention.
Claims (10)
1. The utility model provides a screw injector cylinder negative pressure fixing device which characterized in that includes: a syringe body (100), a piston (200) and an elastic support (300);
the piston (200) is inserted in the syringe body (100);
one end of the elastic support (300) is arranged on the piston (200), and the other end of the elastic support (300) can be abutted against the inner wall of the syringe body (100);
the needle cylinder body (100) is provided with a retractable connecting groove (110) used for connecting one end of the elastic support (300) far away from the piston (200).
2. The screw injector syringe negative pressure fixing device according to claim 1, wherein the elastic support (300) comprises a mounting ring (310) and a plurality of elastic sheets (320);
the mounting ring (310) is sleeved on the piston (200), and one end of the elastic sheet (320) is fixed on the mounting ring (310).
3. The negative pressure fixing device of a screw injector syringe according to claim 2, wherein the resilient tab (320) is L-shaped, and the long end of the resilient tab (320) is fixed on the mounting ring (310) so that the short side (321) of the resilient tab (320) can be snapped into the releasable connecting groove (110).
4. The negative pressure fixing device for the needle cylinder of the screw injector according to claim 2, wherein the number of the spring plates (320) is four, and the four spring plates (320) are uniformly distributed on the mounting ring (310);
the syringe body (100) is internally provided with four retractable connecting grooves (110) corresponding to the elastic sheets (320) along the circumferential direction.
5. The negative pressure fixing device of the screw injector syringe according to claim 4, wherein the cross section of the releasable connecting groove (110) is a right triangle, so that the resilient piece (320) can be separated from the releasable connecting groove (110) when the resilient piece (320) is pulled out of the syringe body (100) along with the piston (200).
6. The negative pressure fixing device for the needle cylinder of the screw injector according to claim 5, wherein the needle cylinder body (100) is provided with a plurality of the retractable connecting grooves (110) along the length direction thereof.
7. The negative pressure fixing device of the screw injector syringe according to claim 6, wherein the outer wall of the syringe body (100) is provided with a negative pressure identification line along the length direction thereof, and the negative pressure identification line corresponds to the releasable connecting groove (110).
8. The negative pressure fixing device for the syringe of the screw injector according to claim 7, wherein the syringe body (100) is provided with a fixing groove (120) at one end far away from the needle.
9. The negative pressure fixing device for the syringe of the screw injector according to claim 8, wherein the cross section of the fixing groove (120) is U-shaped.
10. The negative pressure fixing device for the needle cylinder of the screw injector according to claim 9, wherein a mounting groove for mounting the mounting ring (310) is formed on the piston (200) at the handle of the piston (200).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221054245.9U CN217697429U (en) | 2022-05-05 | 2022-05-05 | Negative pressure fixing device for needle cylinder of screw injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221054245.9U CN217697429U (en) | 2022-05-05 | 2022-05-05 | Negative pressure fixing device for needle cylinder of screw injector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217697429U true CN217697429U (en) | 2022-11-01 |
Family
ID=83792045
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221054245.9U Active CN217697429U (en) | 2022-05-05 | 2022-05-05 | Negative pressure fixing device for needle cylinder of screw injector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217697429U (en) |
-
2022
- 2022-05-05 CN CN202221054245.9U patent/CN217697429U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3841331A (en) | Suction-pump assembly for drawing body fluids | |
| CA3190875A1 (en) | Aspiration syringes and methods thereof | |
| CN217697429U (en) | Negative pressure fixing device for needle cylinder of screw injector | |
| CN209437288U (en) | It is a kind of for detecting the sampling probe of oncogene | |
| CN113288286A (en) | Endoscope cutting anastomat with auxiliary supporting device | |
| CN111568478A (en) | Tumor sampling device | |
| CN210185619U (en) | Marrow liquid quantitative extraction device for hematology department | |
| CN215018645U (en) | Bone marrow puncture needle for hematology department | |
| CN212755735U (en) | Puncture outfit for cytopathology examination | |
| CN214017860U (en) | Miniature sharp instrument box capable of preventing puncture wound | |
| CN210541649U (en) | Medical clinical tumour sampler | |
| CN213189969U (en) | Cardiovascular internal medicine pjncture needle | |
| CN213964563U (en) | Drainage device for respiratory medicine | |
| CN211911670U (en) | Sampler for medical oncology | |
| CN209974772U (en) | Suction device for liquid in culture plate | |
| CN214965913U (en) | Negative pressure type body fluid extraction needle tube | |
| CN211962097U (en) | Tumor sampler | |
| CN219021293U (en) | Fine needle puncture DNA draws auxiliary device | |
| CN213940808U (en) | Disposable negative pressure suction syringe | |
| CN213251760U (en) | Syringe type negative pressure drainage tube | |
| CN212698883U (en) | Portable first-aid blood sampling device | |
| CN215018033U (en) | Disposable sterile tumor tissue negative pressure suction head of keeping | |
| CN217853065U (en) | Marrow puncture extraction device | |
| CN215424786U (en) | Endocrine clinical hydrops draw-out device | |
| CN214762446U (en) | Auxiliary supporting device for vacuum maintenance of large-capacity injector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |