Medical ruler
By using a medical ruler with shape memory alloy metal tubes and polyurethane-coated graduations, the problem of existing medical rulers being unable to adapt to individual patient differences has been solved, enabling flexible measurement of vascular irregularities and lengths, and reducing surgical complexity and economic burden.
Patent Information
- Application Number
- CN202422751105.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-11
- Publication Date
- 2026-02-06
- Estimated Expiration
- 2034-11-11
AI Technical Summary
Existing medical rulers cannot adapt to individual patient differences and cannot accurately measure the abnormal size and length of blood vessels during arteriovenous fistula surgery, increasing the complexity and risk of the operation, especially the economic burden on AVG fistula patients.
It uses a shape memory alloy metal tube as the support part and a measuring part with polyurethane coating and graduations. The support part can be bent to adapt to the shape of the patient's blood vessels, and the measuring part can accurately measure irregular dimensions and lengths.
It enables flexible adjustment based on the patient's blood vessel shape, accurate measurement of blood vessel length, reduced surgical complexity and risk, reduced difficulty in selecting artificial blood vessels, and reduced economic burden on patients.
Smart Images
Figure CN223873942U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to medical instrument technical field especially relates to a medical ruler. BACKGROUND
[0002] Arteriovenous fistulization is a common clinical method, which is a common surgical method for establishing an arteriovenous pathway artificially by using vascular surgery, usually including autologous vascular fistulization (AVF) and artificial vascular fistulization (AVG). Doctors need to perform vascular ultrasound or angiography on patients before the operation, and preliminarily confirm the vascular pathway form to be established and the appropriate length of the graft.
[0003] At the present stage of clinic, the surgeon usually uses gentian violet water-based pen to outline the vascular pathway establishment pre-form, vascular pre-anastomosis position and graft pre-length at the patient's operation site. This method not only requires the surgeon to have skilled vascular suturing technology, but also needs to have a large amount of and rich vascular fistula transplantation clinical experience, and has the ability to estimate the accuracy of vascular implant length, which increases the limitation on the surgeon. In addition, due to the three-dimensional form of the human body and the large individual differences of patients, the operation site is not a standard plane or straight line type but a three-dimensional curved surface form. Even if the surgeon has the above conditions, most patients still need to be further adjusted and trimmed by the doctor during the operation. This increases the complexity and operation time of the surgical method, and brings higher risk to the patient. Especially for patients who need AVG fistulization, the artificial vascular products have different specifications and models, and the length is different. If the length of the vascular graft required by the patient cannot be determined before the operation, the doctor cannot accurately select the specification of the artificial vascular implant required by the patient, which increases the difficulty of selection or replacement of the artificial vascular implant, and further increases the economic burden of the patient.
[0004] The existing clinical medical ruler is regular or standard in shape, such as metal ruler and orthopedic ruler, which cannot be flexibly adjusted according to the differences of patients. UTILITY MODEL CONTENT
[0005] The utility model aims at solving the shortcomings in the prior art and provides a medical ruler.
[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a medical ruler, comprising,
[0007] The support part is provided with a measuring part on the outer side;
[0008] The support part is provided with a measuring part on the outer side;
[0009] Under the stress state, the support part is stressed and deformed, and is bent to drive the measuring part to be bent.
[0010] As a further description of the above technical scheme: in the natural state, the support part is in a straight state of 180°.
[0011] As the further description of the above technical solution: the support part is a hollow cylindrical shape.
[0012] As the further description of the above technical solution: the support part comprises a plurality of metal wires.
[0013] As the further description of the above technical solution: the plurality of metal wires are woven to form a mesh shape.
[0014] As the further description of the above technical solution: the diameter of the metal wire of the support part is 2-5mm.
[0015] As the further description of the above technical solution: the material of the metal wire is a memory metal.
[0016] As the further description of the above technical solution: the measuring part is coated on the outside of the support part.
[0017] As the further description of the above technical solution: the surface of the measuring part is provided with a scale.
[0018] As the further description of the above technical solution: the material of the measuring part is a polyurethane film.
[0019] The above technical solution has the following advantages or beneficial effects:
[0020] The memory alloy metal pipe provides supportability, bendability and shape memory performance, and the outer layer is wrapped with a polyurethane film with a scale, which can be placed at different angles and shapes according to needs, and can accurately measure the medical ruler of special-shaped size or length. BRIEF DESCRIPTION OF DRAWINGS
[0021] Fig. 1 The structure diagram of the medical ruler is provided for the utility model;
[0022] Fig. 2 The sectional view of the medical ruler is provided for the utility model;
[0023] Fig. 3 The structure diagram of the medical ruler in the stress state is provided for the utility model.
[0024] LEGEND:
[0025] 1, support part; 2, measuring part; 3, scale. DETAILED DESCRIPTION
[0026] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present utility model.
[0027] With reference to Figs. 1-3 The present utility model provides an embodiment: a medical ruler, comprising, support part 1, the outer side of support part 1 is provided with measuring part 2, under the stress state, support part 1 is stressed and deformed, and the bending is driven to measuring part 2.
[0028] In the embodiment, the measuring part 2 on the outer side is supported by the support part 1, the special-shaped size or length can be accurately measured, and the angle and shape of the operation required by the patient can be flexibly adjusted.
[0029] In the natural state, the support part 1 is in a straight state of 180 degrees, and the support part 1 is a hollow cylindrical shape.
[0030] In the embodiment, in the natural state, the support part 1 is a straight hollow cylindrical shape, and after the bending measurement under stress, it can automatically restore to a vertical state.
[0031] The support part 1 comprises a plurality of metal wires, and the plurality of metal wires are woven into a grid shape.
[0032] In the embodiment, the support part 1 is a grid-shaped cylinder woven by a plurality of metal wires, and the bending can be performed.
[0033] The diameter of the metal wire of the support part 1 is 2-5mm, and in the embodiment, the support part 1 can select the diameter of the blood vessel to be measured, and can be bent to imitate the shape of the blood vessel during measurement to measure the length of the blood vessel.
[0034] The measuring part 2 is wrapped on the outer side of the support part 1.
[0035] In the embodiment, the measuring part 2 is wrapped from the outer side of the diameter of the support part 1 and extends to the inner diameter of the support part 1, and wraps the curved surfaces on both sides of the support part 1.
[0036] The surface of the measuring part 2 is provided with a scale 3, and the length of the blood vessel can be measured.
[0037] The material of the metal wire is a memory metal, which has recoverability and can automatically restore under the condition of no stress after bending.
[0038] The material of the measuring part 2 is polyurethane film, specifically PU high polymer plastic film, and the outside is printed with a scale 3.
[0039] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application has been described in detail, for the skilled in the art, it still can be modified, or for part of the technical features of the equivalent replacement, within the spirit and principles of the present application, any modification, equivalent replacement, improvement, etc., should be included within the scope of the present application.
Claims
1. A medical ruler characterized in that, include, Support part (1); A measuring part (2) is provided on the outside of the support part (1); Under stress, the support part (1) deforms and bends, which in turn causes the measuring part (2) to bend. In its natural state, the support (1) is in a straight position with a 180° angle. The support part (1) is a hollow cylinder; The support part (1) includes a plurality of metal wires; Several of the aforementioned metal wires are woven together to form a mesh; The diameter of the metal wire in the support part (1) is 2-5mm; The measuring part (2) covers the outside of the support part (1); The surface of the measuring part (2) is provided with a scale (3).
2. The medical ruler of claim 1, wherein: The material of the metal wire is shape memory metal.
3. The medical ruler of claim 1, wherein: The measuring part (2) is made of polyurethane film.