CN101825508B - Measurement method of clamping force of non-invasive hemostat jaw for quality inspection - Google Patents
Measurement method of clamping force of non-invasive hemostat jaw for quality inspectionDownload PDFInfo
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Abstract
Translated fromChinese
Description
Translated fromChinese技术领域technical field
本发明涉及医疗器械检测技术领域，特别是涉及一种面向质量检测的无损伤止血钳钳口夹紧力的测量方法。The invention relates to the technical field of medical device detection, in particular to a method for measuring the clamping force of the jaws of a non-destructive hemostat oriented to quality detection.
背景技术Background technique
在医院外科临床应用中，止血钳是一种常用的医疗器械。手术中，止血钳钳口从张开状态夹紧到闭合状态的过程中，两个钳口之间的夹紧力是一个从零逐渐增大的过程。夹紧力的大小与钳柄部的变形程度直接相关。In the clinical application of hospital surgery, hemostatic clamp is a commonly used medical device. During the operation, when the jaws of the hemostat are clamped from the open state to the closed state, the clamping force between the two jaws is a process of gradually increasing from zero. The magnitude of the clamping force is directly related to the degree of deformation of the pliers handle.
在夹合过程前期，钳柄末端的齿扣咬合数目较少，钳柄变形程度较小，两个钳口之间的夹紧力也较小。随着钳柄末端齿扣咬合数目的逐渐增多，两个钳柄的变形程度逐渐增大，对应的，两个钳口之间的夹紧力也逐渐增大。到所有的齿扣全部咬合时，两个钳口之间的夹紧力达到最大。医生正是利用这种对应关系，在手术中将钳柄末端的齿扣咬合数目调整到合适的程度，以在钳口处获得大小合适的夹紧力。钳口夹紧力大小是否合适严重影响着手术质量。若夹紧力太小，则钳口对血管起不到足够的夹紧作用，会导致一定程度的渗血。若夹紧力太大，则钳口将夹伤血管甚或导致血管的碎裂，给手术带来麻烦并给患者造成不必要的伤害。In the early stage of the clamping process, the number of buckles at the end of the pliers handle is less, the degree of deformation of the pliers handle is smaller, and the clamping force between the two jaws is also smaller. As the number of teeth at the end of the pliers handles gradually increases, the degree of deformation of the two pliers handles gradually increases, and correspondingly, the clamping force between the two jaws also gradually increases. When all the teeth are fully engaged, the clamping force between the two jaws reaches the maximum. The doctor uses this corresponding relationship to adjust the number of teeth and buckles at the end of the pliers handle to an appropriate degree during the operation, so as to obtain an appropriate clamping force at the jaws. Whether the clamping force of the jaws is appropriate or not seriously affects the quality of surgery. If the clamping force is too small, the jaws will not have enough clamping effect on the blood vessel, which will cause a certain degree of bleeding. If the clamping force is too large, the jaws will pinch the blood vessel or even cause the blood vessel to break, which will bring trouble to the operation and cause unnecessary injury to the patient.
当前，不同厂商生产的同一型号止血钳在材料和规格方面都有所差别，这导致即使在钳柄末端咬合相同数目的齿扣，钳口处的夹紧力也不尽相同，而这种差别将直接影响到止血钳的临床使用效果。为了便于生产厂商对现有成熟型号的止血钳或处于改进试制阶段的止血钳进行准确的钳口夹紧力测定，以进行质量认定，需要确定一种精确合理的止血钳钳口夹紧力测量方法。At present, the materials and specifications of the same model of hemostats produced by different manufacturers are different, which leads to different clamping forces at the jaws even if the same number of teeth are engaged at the end of the handle. It directly affects the clinical application effect of the hemostat. In order to facilitate manufacturers to accurately measure the jaw clamping force of existing mature models of hemostats or hemostats in the stage of improved trial production for quality certification, it is necessary to determine an accurate and reasonable measurement of the jaw clamping force of hemostats method.
经对现有技术的文献检索发现，专利号为ZL200820016910.9的中国实用新型专利《止血钳》(公告号为CN201139601Y)公开了一种新型止血钳。该专利通过将两个钳臂的前端与钳口内侧平面的连接处设计为原弧面，解决了常规止血钳钳口根部在手术中容易损伤软组织的缺陷。但是，该专利对止血钳的改进仅限于钳口局部的形状设计，并不能实现对钳口夹紧力的精确测量。申请号为200710185338.9的中国发明专利《焦炉捣固机锤杆夹紧力的测量调整方法及测量系统》(公告号为CN101206151A)公开了一种焦炉捣固机锤杆夹紧力的测量调整方法。该专利涉及夹紧力测量，但其应用与医疗器械检测分属不同的领域，待检测部位和检测条件也与止血钳钳口夹紧力测量相差甚远。到目前为止，尚无专门用于止血钳钳口夹紧力测量的方法。It is found through literature search of the prior art that the Chinese utility model patent "Hemostatic Forceps" (notification number CN201139601Y) with the patent number ZL200820016910.9 discloses a new type of hemostatic forceps. This patent solves the defect that the root of the jaws of conventional hemostats is easy to damage soft tissues during surgery by designing the connection between the front ends of the two forceps arms and the inner plane of the jaws as an original arc surface. However, the improvement of the hemostat in this patent is limited to the local shape design of the jaws, and cannot achieve accurate measurement of the clamping force of the jaws. The Chinese invention patent "Measurement and Adjustment Method and Measurement System of Clamping Force of Hammer Rod of Coke Oven Tamping Machine" (notice number CN101206151A) with application number 200710185338.9 discloses a measurement and adjustment of clamping force of hammer rod of coke oven tamping machine method. This patent involves the measurement of clamping force, but its application is in a different field from medical device testing, and the parts to be tested and the testing conditions are also far from the measurement of the clamping force of the jaws of hemostats. So far, there is no method dedicated to the measurement of the clamping force of the hemostat jaws.
发明内容Contents of the invention
为克服上述已有技术的不足，本发明要解决的技术问题是提供一种面向质量检测的无损伤止血钳钳口夹紧力测量方法，从而便于生产厂商对现有成熟型号的止血钳或处于改进试制阶段的止血钳进行准确的钳口夹紧力测定，以进行质量认定。In order to overcome the deficiencies of the above-mentioned prior art, the technical problem to be solved by the present invention is to provide a method for measuring the clamping force of the jaws of the non-destructive hemostat oriented to quality inspection, so that it is convenient for manufacturers to check the existing mature models of hemostats or in Improve the hemostat in the trial production stage to measure the clamping force accurately for quality certification.
为解决上述技术问题，本发明的技术方案是：In order to solve the problems of the technologies described above, the technical solution of the present invention is:
一种面向质量检测的无损伤止血钳钳口夹紧力的测量方法，该方法包含以下四个步骤：A method for measuring the clamping force of the jaws of a non-destructive hemostat oriented to quality inspection, the method includes the following four steps:
步骤一、准备待检测试件，在不破坏两个钳臂的前提下将两者分离开来；
步骤二、初调整无损伤止血钳钳口夹紧力测量装置的钳口定位及测力机构；
步骤三、调整无损伤止血钳钳口夹紧力测量装置的钳口铰链孔定位机构，并进行钳口铰链孔定位；
步骤四、分步调整无损伤止血钳钳口夹紧力测量装置的套指圈施力及定位机构，每调整一步，使套指圈朝左前进一个齿扣的距离，相应微调无损伤止血钳钳口夹紧力测量装置的钳口定位及测力机构，并读取钳口正压力数据。Step 4: Step by step, adjust the ring force and positioning mechanism of the non-injury hemostat jaw clamping force measuring device. Every step of adjustment, make the ring move to the left by a distance of a tooth button, and fine-tune the non-injury hemostat accordingly The jaw positioning and force measuring mechanism of the jaw clamping force measuring device, and read the positive pressure data of the jaw.
所述步骤二中，初调整是指测量装置在空载状态下，使钳口定位及测力机构上的测力传感器左端测点处于零位。In the second step, the initial adjustment means that the measuring device is in the no-load state, so that the positioning of the jaws and the measuring point at the left end of the load cell on the force measuring mechanism are at zero.
步骤三中，将待检测试件右手套指圈所在的钳臂通过钳口铰链孔定位在钳口铰链孔定位机构的销子上。In
与现有技术相比，本发明的有益效果可以是：Compared with prior art, the beneficial effect of the present invention can be:
本发明提供一种面向质量检测的无损伤止血钳钳口夹紧力测量方法。采用该方法，依托专门设计的测量装置，可对各种类型的无损伤止血钳钳口夹紧力进行精确测量。所得测量数据将在以下两个方面为无损伤止血钳生产厂商提供技术支持：1、有助于为某种已有型号的无损伤止血钳质量检测提供依据；2、辅助改进处于试制阶段的止血钳，以实现新型号无损伤止血钳的科学优化设计。The invention provides a quality inspection-oriented method for measuring the clamping force of the jaws of the non-damaging hemostat. With this method, relying on a specially designed measuring device, the clamping force of the jaws of various types of non-invasive hemostats can be accurately measured. The obtained measurement data will provide technical support for manufacturers of non-invasive hemostats in the following two aspects: 1. Help to provide a basis for the quality inspection of a certain type of non-invasive hemostats; 2. Assist in the improvement of hemostasis in the trial production stage Forceps, in order to realize the scientific optimization design of the new type of non-invasive hemostat.
通过本发明面向质量检测的无损伤止血钳钳口夹紧力测量方法，所得测量数据与已有标准或现有成熟无损伤止血钳的相关测量数据进行比较，可用于对待检测试件进行质量认定。Through the method for measuring the clamping force of the jaws of the non-destructive hemostat oriented to quality inspection of the present invention, the obtained measurement data is compared with the relevant measurement data of existing standards or existing mature non-destructive hemostats, and can be used for quality identification of the test piece to be tested .
本发明面向质量检测的无损伤止血钳钳口夹紧力测量方法原理简单，操作方便，经过简单培训即可动手操作。本发明依托无损伤止血钳钳口夹紧力测量装置，可满足直头、弯头、折角头、驼背头、直柄、弯柄等多种型号和规格无损伤止血钳钳口夹紧力的测量。The method for measuring the clamping force of the jaws of the non-damaging hemostat oriented to quality inspection is simple in principle, convenient in operation, and can be operated by hands after simple training. Relying on the measuring device for the clamping force of the jaws of the non-damaging hemostat, the present invention can meet the requirements of the clamping force of the jaws of the non-damaging hemostats of various types and specifications such as straight head, elbow, angled head, hunchback head, straight handle, curved handle, etc. Measurement.
附图说明Description of drawings
图1为本发明所依托无损伤止血钳钳口夹紧力测量装置简图Fig. 1 is a schematic diagram of the measuring device for clamping force of the jaws of the non-damaging hemostat on which the present invention relies
图2为本发明面向质量检测的无损伤止血钳钳口夹紧力测量方法流程图Fig. 2 is a flow chart of the method for measuring the clamping force of the jaws of the non-destructive hemostat facing quality inspection in the present invention
具体实施方式Detailed ways
下面结合附图和实施例对本发明的具体实施方式做进一步详细的说明，但不应以此限制本发明的保护范围。The specific implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings and examples, but the protection scope of the present invention should not be limited thereby.
本发明所依托的无损伤止血钳钳口夹紧力测量装置由底座，钳口铰链孔定位机构，钳口定位及测力机构，套指圈施力及定位机构四部分构成。钳口铰链孔定位机构固定于底座之上，其上的销子用于对无损伤止血钳钳口铰链孔进行定位。钳口定位及测力机构具有前后移动、上下移动、及左右移动三个自由度，其上的测力传感器直接与待测钳口接触，可方便地实现止血钳钳口上待测力点的定位与正压力测量，数字式显示仪则用于测量数据的显示。钳口定位及测力机构上刻有刻度线，以用于测力传感器上测力点的定位。套指圈施力及定位机构具有前后移动及左右移动两个自由度，其上的定位销直接与止血钳钳柄部套指圈的内壁接触，可方便地实现套指圈定位与施力。套指圈施力及定位机构上刻有刻度线，以用于套指圈左移距离的定位。The device for measuring the clamping force of the jaws of non-injury hemostats based on the present invention consists of four parts: a base, a jaw hinge hole positioning mechanism, a jaw positioning and force measuring mechanism, and a finger ring applying force and positioning mechanism. The jaw hinge hole positioning mechanism is fixed on the base, and the pins on it are used for positioning the jaw hinge hole of the non-injury hemostat. The jaw positioning and force measuring mechanism has three degrees of freedom of forward and backward movement, up and down movement, and left and right movement. For positive pressure measurement, the digital display is used to display the measurement data. The positioning of the jaws and the force measuring mechanism are engraved with scale lines for the positioning of the force measuring point on the load cell. The ring force application and positioning mechanism has two degrees of freedom of forward and backward movement and left and right movement, and the positioning pin on it directly contacts the inner wall of the ring ring at the handle of the hemostat forceps, so that the ring positioning and force application can be realized conveniently. The scale line is engraved on the force application and positioning mechanism of the finger ring, which is used for the positioning of the leftward movement distance of the finger ring.
上述无损伤止血钳钳口夹紧力的测量装置，包括：底座、钳口铰链孔定位机构、钳口定位及测力机构、及套指圈施力及定位机构。所述的钳口铰链孔定位机构固定于底座的上端面的中部，用于无损伤止血钳钳口铰链孔的定位；所述的钳口定位及测力机构可通过燕尾槽沿底座的厚板状结构做前后滑动，以适应钳口上测力点到钳口铰链孔之间水平距离的不同；所述的套指圈施力及定位机构可通过燕尾槽沿底座的厚板状结构做前后滑动，以适应套指圈到钳口铰链孔之间距离的不同。The above-mentioned measuring device for the clamping force of the jaws of non-injury hemostats includes: a base, a jaw hinge hole positioning mechanism, a jaw positioning and force measuring mechanism, and a finger ring force applying and positioning mechanism. The jaw hinge hole positioning mechanism is fixed in the middle of the upper end surface of the base, and is used for positioning the jaw hinge hole of the non-damaging hemostat; the jaw positioning and force measuring mechanism can pass through the dovetail groove along the thick plate of the base The shape structure slides back and forth to adapt to the difference in the horizontal distance between the force measuring point on the jaw and the hinge hole of the jaw; the force applying and positioning mechanism of the sleeve finger ring can slide back and forth along the thick plate structure of the base through the dovetail groove, To adapt to the difference in the distance between the finger ring and the hinge hole of the jaw.
所述的钳口铰链孔定位机构中，凸形块状结构固定在底座的上端面的中部，钳口铰链孔定位机构盘状结构安装于凸形块状结构上端窄部的左侧面上，销子固定于钳口铰链孔定位机构盘状结构上。In the jaw hinge hole positioning mechanism, the convex block structure is fixed in the middle of the upper end surface of the base, and the disc structure of the jaw hinge hole positioning mechanism is installed on the left side of the upper narrow part of the convex block structure. The pin is fixed on the disc structure of the jaw hinge hole positioning mechanism.
所述的钳口定位及测力机构中，竖直滑块可通过燕尾槽沿立块做上下滑动；水平滑块可通过燕尾槽沿竖直滑块做左右滑动；测力传感器固定在水平滑块的左端面上；数字式显示仪通过导线与测力传感器相连。In the jaw positioning and force measuring mechanism, the vertical slider can slide up and down along the vertical block through the dovetail groove; the horizontal slider can slide left and right along the vertical slider through the dovetail groove; the force sensor is fixed on the horizontal slide On the left end face of the block; the digital display is connected with the load cell through wires.
所述的套指圈施力及定位机构中，定位销连接在套指圈施力及定位机构盘状结构上；套指圈施力及定位机构盘状结构通过套指圈施力及定位机构连接螺栓连接在上滑块的左侧面上；上滑块可通过燕尾槽沿下滑块做左右滑动。In the said ring applying force and positioning mechanism, the positioning pin is connected to the disc structure of the ring applying force and positioning mechanism; the disc structure of the ring applying force and positioning mechanism passes through the ring applying force and positioning mechanism The connecting bolts are connected to the left side of the upper slider; the upper slider can slide left and right along the lower slider through the dovetail groove.
本发明面向质量检测的无损伤止血钳钳口夹紧力测量方法，包含以下四个步骤：The method for measuring the clamping force of the jaws of the non-destructive hemostat oriented to quality inspection of the present invention comprises the following four steps:
第1步，准备好待检测试件。试件可以是待进行质量检测的某种已有型号的无损伤止血钳成品，也可以是处于试制改进阶段的某种新型号无损伤止血钳的试制件。确定好待检测试件后，在不破坏钳臂上任何部分的前提下将两个钳臂分离开来。The first step is to prepare the test piece to be tested. The test piece can be a finished product of a certain type of non-destructive hemostat to be tested for quality, or it can be a trial-manufactured piece of a new type of non-destructive hemostat that is in the stage of trial production and improvement. After determining the test piece to be tested, separate the two pliers arms without destroying any part of the pliers arms.
第2步，根据待检测试件的规格，对本发明所依托无损伤止血钳钳口夹紧力测量装置的钳口定位及测力机构进行初调整。在空载状态下，使钳口定位及测力机构中的测力传感器左端测点处于零位。零位的确定可根据钳口定位及测力机构上的刻度线进行。In the second step, according to the specifications of the test piece to be tested, initial adjustments are made to the jaw positioning and the force measuring mechanism of the device for measuring the clamping force of the jaw of the non-damaging hemostat that the present invention relies on. In the no-load state, make the jaw positioning and the measuring point at the left end of the load cell in the force measuring mechanism be at zero. The zero position can be determined according to the positioning of the jaws and the scale line on the force measuring mechanism.
第3步，根据待检测试件的规格，对本发明所依托无损伤止血钳钳口夹紧力测量装置的钳口铰链孔定位机构进行调整。调整后将待检测试件右手套指圈所在的钳臂通过钳口铰链孔固定在钳口铰链孔定位机构的销子上。此时，本发明所依托无损伤止血钳钳口夹紧力测量装置的钳口定位及测力机构，其上的测力传感器左端测点与钳口铰链孔轴线所确定的虚拟平面，与本发明所依托无损伤止血钳钳口夹紧力测量装置底座的左侧面平行。The third step is to adjust the positioning mechanism of the jaw hinge hole of the device for measuring the clamping force of the jaw of the non-damaging hemostat based on the specification of the test piece to be tested. After adjustment, fix the pincer arm where the finger ring of the right glove of the test piece to be tested is located on the pin of the jaw hinge hole positioning mechanism through the jaw hinge hole. Now, the present invention relies on the positioning of the jaws and the force measuring mechanism of the measuring device for the clamping force of the jaws of the non-damaging hemostat, and the virtual plane determined by the measuring point at the left end of the force measuring sensor and the axis of the hinge hole of the jaws is the same as that of the present invention. The left side of the base of the clamping force measurement device of the non-injury hemostat jaw clamping force measurement device on which the invention relies is parallel.
第4步，根据待检测试件的规格，对本发明所依托无损伤止血钳钳口夹紧力测量装置的套指圈施力及定位机构进行分步调整。每调整一步，使套指圈朝左前进一个齿扣的距离。前进距离可根据套指圈施力及定位机构上的刻度线确定。每调整一步套指圈施力及定位机构，相应地对钳口定位及测力机构进行微调，以补偿由于受力导致的测力传感器左端测点右移。微调后，测力传感器左端测点应回复到零位。每调整一步套指圈施力及定位机构并对钳口定位及测力机构进行微调后，读取数字式显示仪的读数，该读数即对应待检测试件在钳柄末端的齿扣咬合到相应的数目时钳口处所产生的夹紧力。In step 4, according to the specifications of the test piece to be tested, step-by-step adjustments are made to the ferrule applying force and the positioning mechanism of the non-damaging hemostat jaw clamping force measuring device relied on by the present invention. Every time you adjust one step, make the finger ring move to the left by the distance of one tooth button. The advancing distance can be determined according to the applied force of the ring and the scale mark on the positioning mechanism. Every time you adjust the force and positioning mechanism of the finger ring, fine-tune the jaw positioning and force measuring mechanism accordingly to compensate for the rightward movement of the measuring point at the left end of the load cell due to the force. After fine-tuning, the measuring point at the left end of the load cell should return to zero. After each step of adjusting the finger ring force and positioning mechanism and fine-tuning the jaw positioning and force measuring mechanism, read the reading of the digital display, which corresponds to the tooth buckle at the end of the pliers handle of the test piece to be tested. The corresponding number is the clamping force generated at the jaws.
下面对照附图详细说明。Describe in detail below with reference to accompanying drawing.
如图1所示，本发明所依托的无损伤止血钳钳口夹紧力测量装置5由底座1，钳口铰链孔定位机构2，钳口定位及测力机构3，套指圈施力及定位机构4构成。As shown in Figure 1, the non-injury hemostat jaw clamping force measuring device 5 relied on by the present invention consists of a
其中，钳口铰链孔定位机构2固定于底座1之上，其上的销子24用于对无损伤止血钳钳口铰链孔进行定位。钳口定位及测力机构3具有前后移动、上下移动、及左右移动三个自由度，其上的测力传感器38直接与待测钳口接触，可方便地实现止血钳钳口上待测力点的定位与正压力测量，数字式显示仪39则用于测量数据的显示。钳口定位及测力机构2上刻有刻度线，以用于测力传感器38上测力点的定位。套指圈施力及定位机构4具有前后移动及左右移动两个自由度，其上的定位销47直接与止血钳钳柄部套指圈的内壁接触，可方便地实现套指圈定位与施力。套指圈施力及定位机构4上刻有刻度线，以用于套指圈左移距离的定位。Wherein, the jaw hinge
如图2所示，为本发明面向质量检测的无损伤止血钳钳口夹紧力测量方法流程图，其共包含以下4个步骤：As shown in Figure 2, it is a flow chart of the method for measuring the clamping force of the jaw of the non-destructive hemostat facing quality inspection in the present invention, which comprises the following 4 steps:
第1步，准备好待检测试件。试件可以是已有型号止血钳成品，也可以是新型号止血钳试制件。在不破坏两个钳臂的前提下将两者分离开来。The first step is to prepare the test piece to be tested. The test piece can be a finished product of an existing model of hemostat, or a trial product of a new model of hemostat. Separate the two clamp arms without damaging them.
第2步，根据待检测试件的规格，对本发明所依托无损伤止血钳钳口夹紧力测量装置5的钳口定位及测力机构3进行初调整。在空载状态下，使钳口定位及测力机构3上的测力传感器38左端测点处于零位。In the second step, according to the specifications of the test piece to be tested, initial adjustments are made to the jaw positioning and the
第3步，根据待检测试件的规格，对本发明所依托无损伤止血钳钳口夹紧力测量装置5的钳口铰链孔定位机构2进行调整。调整后将待检测试件右手套指圈所在的钳臂通过钳口铰链孔定位在钳口铰链孔定位机构2的销子24上。The third step is to adjust the jaw hinge
第4步，根据待检测试件的规格，对本发明所依托无损伤止血钳钳口夹紧力测量装置5的套指圈施力及定位机构4进行分步调整。每调整一步，使套指圈朝左前进一个齿扣的距离，并相应地对钳口定位及测力机构3进行微调，以补偿由于受力导致的测力传感器38左端测点右移。每调整一步套指圈施力及定位机构4并对钳口定位及测力机构3进行微调后，读取数字式显示仪39的读数，该读数即对应待检测试件在钳柄末端的齿扣咬合到相应的数目时钳口处所产生的夹紧力。Step 4: According to the specifications of the test piece to be tested, step-by-step adjustments are made to the ring force application and positioning mechanism 4 of the non-damaging hemostat jaw clamping force measuring device 5 of the present invention. Every adjustment step makes the finger ring move forward by the distance of a tooth button to the left, and correspondingly fine-tunes the positioning of the jaws and the force-measuring
采用本发明方法，可对各种类型的处于大批量生产状态或试制阶段的无损伤止血钳钳口夹紧力进行精确测量，所得测量数据与已有标准或现有成熟无损伤止血钳的相关测量数据进行比较，以用于对待检测试件进行质量认定。By adopting the method of the present invention, the clamping force of the jaws of various types of non-damaging hemostats in the state of mass production or in the trial production stage can be accurately measured, and the obtained measurement data are related to existing standards or existing mature non-damaging hemostats The measured data are compared for quality identification of the test piece to be tested.
以上所述仅为本发明的较佳实施例而已，并非用来限定本发明的实施范围。任何所属技术领域中具有通常知识者，在不脱离本发明的精神和范围内，当可作各种的更动与润饰，因此本发明的保护范围应当视权利要求书所界定范围为准。The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the implementation scope of the present invention. Anyone with ordinary knowledge in the technical field can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention should be based on the scope defined in the claims.
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| US7144402B2 (en)* | 2003-06-16 | 2006-12-05 | Synovis Life Technologies, Inc. | Vascular clamp |
| CN101206151A (en)* | 2007-12-01 | 2008-06-25 | 太原重型机械集团有限公司 | Measurement and adjustment method and measurement system for the clamping force of the hammer rod of the coke oven tamping machine |
| CN201139601Y (en)* | 2008-01-23 | 2008-10-29 | 孟祥芹 | Hemostat |
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| US7144402B2 (en)* | 2003-06-16 | 2006-12-05 | Synovis Life Technologies, Inc. | Vascular clamp |
| CN101534720A (en)* | 2006-09-29 | 2009-09-16 | 伊西康内外科公司 | Surgical stapling instrument with mechanical indicator to show levels of tissue compression |
| CN101206151A (en)* | 2007-12-01 | 2008-06-25 | 太原重型机械集团有限公司 | Measurement and adjustment method and measurement system for the clamping force of the hammer rod of the coke oven tamping machine |
| CN201139601Y (en)* | 2008-01-23 | 2008-10-29 | 孟祥芹 | Hemostat |
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